TRAPPIST-1: Perbedaan antara revisi

TRAPPIST-1^[1]
	; Lokasi TRAPPIST-1 di rasi bintang Akuarius.
Data pengamatan; Epos Ekuinoks
Rasi bintang	Akuarius
Asensio rekta	23j 06m 29.283d
Deklinasi	–05° 02′ 28.59″
Magnitudo tampak (V)	18,80
Ciri-ciri
Kelas spektrum	M8V; M8.2V
Indeks warna V−R	2,33
Indeks warna R−I	2,47
Astrometri
Kecepatan radial (Rv)	−56,3 km/s
Paralaks (π)	82,58 mdb
Jarak	39,5±1,3 tc ; (12,1±0,4 pc)
Magnitudo mutlak (MV)	18,4±0,1
Detail
Massa	0,08±0,009 M☉
Massa	83,8048±9,428 MJ
Radius	0,114±0,006 R☉
Luminositas (bolometrik)	0,000525±0,000036 L☉
Luminositas (visual, LV)	0,00000373 L☉
Gravitasi permukaan (log g)	±5,227
Suhu	2.550±55 K
Metalisitas	0,04±0,08
Rotasi	1,40±0,05 hari
Kecepatan rotasi (v sin i)	6±2 km/s
Usia	> 1 gigatahun
Penamaan lain
	2MASS J23062928-0502285, 2MASSI J2306292-050227, 2MASSW J2306292-050227, 2MUDC 12171
Referensi basis data
SIMBAD	data

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Revisi terkini sejak 1 November 2023 08.23

TRAPPIST-1, juga dikenal sebagai 2MASS J23062928-0502285,^[6] adalah sebuah bintang katai merah ultradingin^[4]^[7] berjarak 39 tahun cahaya (12 parsec; 370 petameter) dari Bumi dalam rasi bintang Akuarius.^[8]

Pada tahun 2015, tim astronom yang dipimpin oleh Michaël Gillon di Universitas Liège, Belgia menggunakan fotometri transit bersama dengan Transiting Planets and Planetesimals Small Telescope (TRAPPIST) di Observatorium La Silla di Chili untuk menemukan tiga planet seukuran Bumi yang sedang mengorbit bintang katai.^[7]^[9]^[10] Tanggal 22 Februari 2017, para ahli astronomi mengumumkan empat eksoplanet tambahan sekitar TRAPPIST-1. Selain TRAPPIST, pekerjaan ini memanfaatkan antara lain Very Large Telescope di Paranal dan Teleskop luar angkasa Spitzer NASA, dan menemukan total jumlah planet menjadi tujuh, di mana tiga di antaranya dianggap berada dalam zona laik huni.^[11]^[12] Yang lainnya juga mungkin dipercaya laik dihuni (memiliki air cair di suatu tempat di permukaannya).^[11]^[13]

Penemuan dan penamaan

Bintang di pusat sistem ditemukan tahun 1999 pada saat Two Micron All-Sky Survey (2MASS).^[14] Hal tersebut masuk dalam katalog berikutnya dengan penamaan "2MASS J23062928-0502285". Angka-angkanya mengacu pada asensio rekta dan deklinasi dari posisi bintang di langit dan "J" mengacu pada Julian Epoch.

Sistem ini kemudian dipelajari oleh sebuah tim di Universitas Liège, yang membuat observasi awal mereka menggunakan Transiting Planets and Planetesimals Small Telescope–South dari bulan September hingga Desember 2015 dan mengumumkan temuan mereka dalam edisi Mei 2016 Jurnal Nature.^[4]^[9]Akronim teleskop robotik dari TRAPPIST menekankan bahwa proyek ini berasal dari Belgia, menunjukkan seperti halnya ordo keagamaan kontemplatif dari para Trapis (para astronom merayakan penemuan mereka dengan satu ronde bir Trapis kontemplatif,^[15] yang mereka junjung tinggi).^[16] Karena bintang yang dikitari eksoplanet pertama ditemukan dengan teleskop ini, maka para penemu menamakannya "TRAPPIST-1".

Planet dinamakan berdasarkan urutan penemuanya, dimulai dengan b untuk planet yang pertama ditemukan, c untuk yang kedua dan seterusnya.^[17] Tiga planet di sekitar TRAPPIST-1 yang pertama ditemukan dan diberi nama b, c, dan d berdasarkan kenaikan periode orbit,^[4] dan kelompok kedua penemuan dengan cara yang sama diberi nama e sampai h.

Karakteristik bintang

TRAPPIST-1 merupakan sebuah bintang katai ultradingin, dengan kelas spektral M8,0 ± 0,5, yang kira-kira 8% massa dan 11% radius dari Matahari. Temperaturnya 2550 K dan sedikitnya berusia 500 juta tahun.^[4] Sebagai perbandingan, Matahari berusia sekitar 4,6 miliar tahun^[18] dan memiliki temperatur 5778 K.^[19]

Sistem keplanetan

Pada Februari 2017 para ahli astronomi mengumumkan penemuan sistem keplanetan dari bintang ini yang tersusun atas tujuh planet mirip Bumi (e, f, g) tiga di antaranya mengorbit dalam zona laik huni.^[20]^[21]

Sistem keplanetan TRAPPIST-1^[22]^[23]
Anggota (diurut dari bintang)	Massa	Sumbu semimayor (AU)	Periode orbit (hari)	Eksentrisitas	Inklinasi	Jari-jari
b	0,85±0,72 M_⊕	0,01111	1,51087081±0,00000060	< 0,081	89,65±0,25°	1,086±0,035 R_⊕
c	1,38±0,61 M_⊕	0,01522	2,4218233±0,0000017	< 0,083	89,67±0,17°	1,056±0,035 R_⊕
d	0,41±0,27 M_⊕	0,021±0,006	4,049610±0,000063	< 0,070	89,75±0,16°	0,772±0,030 R_⊕
e	0,62±0,58 M_⊕	0,028	6,099615±0,000011	< 0,085	89,86±0,11°	0,918±0,039 R_⊕
f	0,68±0,18 M_⊕	0,037	9,206690±0,000015	< 0,063	89,680±0,034°	1,045±0,038 R_⊕
g	1,34±0,88 M_⊕	0,045	12,35294±0,00012	< 0,061	89,710±0,025°	1,127±0,041 R_⊕
h	0,331+0,056 −0,049 M_⊕	0,06193488 (926.532.617,01 juta km)	18,767953±0,000080	0,00567±0,00121	89,796±0,023°	0,773+0,026 −0,027 R_⊕

Ketujuh planet yang mengitari TRAPPIST-1 memiliki jarak orbit yang jauh lebih kecil dari jarak Merkurius dari Matahari. Jarak antara orbit dari TRAPPIST 1-b dengan TRAPPIST 1c sama dengan 1,6 kali jarak Bumi ke Bulan. Masing-masing planet mungkin akan terlihat lebih menonjol dari planet lainnya, dan akan lebih besar dari penampakan Bulan dari Bumi.^[24]^[25]^{[Verifikasi gagal]} Satu tahun di planet terdekatnya hanya berlangsung satu setengah hari di bumi, dan jika satu tahun di planet keenamnya berlangsung 12,3 hari di bumi.

Galeri

Konsep artis gambaran sistem keplanetan TRAPPIST-1 yang mungkin terlihat, berdasarkan data yang tersedia mengenai diameter, massa, dan jarak mereka dari bintang induk
Impresi artis gambaran sistem keplanetan dari bintang TRAPPIST-1^[26]
Impresi artis gambaran pergerakan planet terhadap bintang katai merah di dalam sisem TRAPPIST-1^[27]
Impresi artis skala perbandingan antara Matahari dan TRAPPIST-1, bintang ini hanya memiliki 11% dari diameter Matahari dan memiliki warna yang lebih kemerahan.
Gambaran TRAPPIST-1 dan tiga planetnya.
Impresi artis gambaran pemandangan dari TRAPPIST-1c
Impresi artis video gambaran satu planet dengan tiga planet lainnya yang saling berdekatan
NASA-JPL/Caltech: Gambaran sistem keplanetan dari TRAPPIST-1, yang kurang lebih sama
Perbandingan dengan sistem tata surya kita; Ketujuh planet dari TRAPPIST-1 yang memiliki orbit lebih kecil dari orbit Merkurius terhadap Matahari
Video ini menggambarkan perjalanan dari Bumi ke Bulan dan menuju ke TRAPPIST-1.
Atas: ilustrasi artis tentang 7 planet sistem TRAPPIST-1 (angka menunjukkan periode orbit, jarak dari bintang, jari-jari dan massa, dibandingkan dengan Bumi).
Bawah: planet-planet kebumian di Tata Surya, dengan skala yang sama.

Catatan

^ berdasarkan estimasi jenis spektral fotometrik
^ Dengan mengambil magnitudo visual absolut TRAPPIST-1 $\scriptstyle M_{V_{\ast }}=18.4$ dan magnitudo visual absolut Matahari $\scriptstyle M_{V_{\odot }}=4.83$ , luminositas visual dapat dihitung dengan $\scriptstyle {\frac {L_{V_{\ast }}}{L_{V_{\odot }}}}=10^{0.4\left(M_{V_{\odot }}-M_{V_{\ast }}\right)}$
^ Gravitasi permukaan dihitung langsung dari Hukum gravitasi universal Newton, dengan rumus $\scriptstyle g={\frac {GM}{r^{2}}}$ di mana M adalah massa objek, r adalah radiusnya, dan G adalah konstanta gravitasi.

Referensi

^ "TRAPPIST-1b". Open Exoplanet Catalogue. Diarsipkan dari versi asli tanggal 2016-11-06. Diakses tanggal 2 May 2016.
^ ^a ^b Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (June 2003). "2MASS All Sky Catalog of point sources". VizieR Online Data Catalog. European Southern Observatory with data provided by the SAO/NASA Astrophysics Data System. 2246. Bibcode:2003yCat.2246....0C.
^ Costa, E.; Mendez, R.A.; Jao, W.-C.; Henry, T.J.; Subasavage, J.P.; Ianna, P.A. (August 4, 2006). "The Solar Neighborhood. XVI. Parallaxes from CTIOPI: Final Results from the 1.5 m Telescope Program" (PDF). The Astronomical Journal. The American Astronomical Society. 132 (3): 1234. Bibcode:2006AJ....132.1234C. doi:10.1086/505706.
^ ^a ^b ^c ^d ^e Gillon, M.; Jehin, E.; Lederer, S. M.; Delrez, L.; De Wit, J.; Burdanov, A.; Van Grootel, V.; Burgasser, A. J.; Triaud, A. H. M. J.; Opitom, C.; Demory, B.-O.; Sahu, D. K.; Bardalez Gagliuffi, D.; Magain, P.; Queloz, D. (2016). "Temperate Earth-sized planets transiting a nearby ultracool dwarf star" (PDF). Nature. 533 (7602): 221–224. Bibcode:2016Natur.533..221G. doi:10.1038/nature17448.
^ Viti, Serena; Jones,, Hugh R. A. (November 1999). "Gravity dependence at the bottom of the main sequence". Astronomy and Astrophysics. 351: 1028–1035. Bibcode:1999A&A...351.1028V. Diakses tanggal 6 May 2016.
^ "2MASS J23062928-0502285".
^ ^a ^b "Three Potentially Habitable Worlds Found Around Nearby Ultracool Dwarf Star - Currently the best place to search for life beyond the Solar System". European Southern Observatory (dalam bahasa Inggris). Diakses tanggal 2016-05-02.
^ Chang, Kenneth (22 February 2017). "7 Earth-Size Planets Identified in Orbit Around a Dwarf Star". New York Times. Diakses tanggal 22 February 2017.
^ ^a ^b "Could these newly-discovered planets orbiting an ultracool dwarf host life?". The Guardian. 2 May 2016.
^ "Three New Planets Are the Best Bets for Life". Popular Mechanics. 2 May 2016. Diakses tanggal 2 May 2016.
^ ^a ^b "Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1". SpaceRef. 22 February 2017. Diakses tanggal 11 February 2017. ^{[pranala nonaktif permanen]}
^ "NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star". Exoplanet Exploration: Planets Beyond our Solar System (Siaran pers). Diakses tanggal 22 February 2017.
^ "NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star". Exoplanet Exploration: Planets Beyond our Solar System. NASA. Diakses tanggal 22 February 2017.
^ Bryant, Tracey (22 February 2017). "Celestial Connection". University of Delaware.
^ Gramer, Robbie (22 February 2017). "News So Foreign It's Out of This World: Scientists Discover Seven New Potentially Habitable Planets". Foreign Policy.
^ "New National Telescope at La Silla—TRAPPIST to Scout the Sky and Uncover Exoplanets and Comets (eso1023 — Organisation Release)". www.eso.org. ESO. 8 June 2010. Diakses tanggal 4 January 2015.
^ Hessman, F. V.; Dhillon, V. S.; Winget, D. E.; Schreiber, M. R.; Horne, K.; Marsh, T. R.; Guenther, E.; Schwope, A. et al. (2010). "On the naming convention used for multiple star systems and extrasolar planets". arΧiv:1012.0707 [astro-ph.SR].
^ Williams, Matt (24 September 2016). "What is the Life Cycle Of The Sun?". Universe Today. Diakses tanggal 19 February 2011.
^ Cain, Fraser (23 December 2015). "Temperature of the Sun". Universe Today. Diakses tanggal 19 February 2011.
^ "NASA Telescope Reveals Largest Batch of Earth-Size, Habitable-Zone Planets Around Single Star" (Siaran pers). NASA.
^ "TRAPPIST-1 Planet Lineup". jpl.nasa.gov.
^ Gillon, Michaël; Triaud, Amaury H. M. J.; Demory, Brice-Olivier; Jehin, Emmanuël; Agol, Eric; Deck, Katherine M.; Lederer, Susan M.; Wit, Julien de; Burdanov, Artem; Ingalls, James G.; Bolmont, Emeline; Leconte, Jeremy; Raymond, Sean N.; Selsis, Franck; Turbet, Martin; Barkaoui, Khalid; Burgasser, Adam; Burleigh, Matthew R.; Carey, Sean J.; Chaushev, Aleksander; Copperwheat, Chris M.; Delrez, Laetitia; Fernandes, Catarina S.; Holdsworth, Daniel L.; Kotze, Enrico J.; Grootel, Valérie Van; Almleaky, Yaseen; Benkhaldoun, Zouhair; Magain, Pierre; Queloz, Didier (2017). "Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1". Nature. 542: 456–460. doi:10.1038/nature21360.
^ Gillon, M.; Triaud, A. H. M. J.; Demory, B.-O.; Jehin, E.; Agol, E.; Deck, K. M.; Lederer, S. M.; De Wit, J.; Burdanov, A.; Ingalls, J. G.; Bolmont, E.; Leconte, J.; Raymond, S. N.; Selsis, F.; Turbet, M.; Barkaoui, K.; Burgasser, A.; Burleigh, M. R.; Carey, S. J.; Chaushev, A.; Copperwheat, C. M.; Delrez, L.; Fernandes, C. S.; Holdsworth, D. L.; Kotze, E. J.; Van Grootel, V.; Almleaky, Y.; Benkhaldoun, Z.; Magain, P.; Queloz, D. (2017). "Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1" (PDF). Nature. 542 (7642): 456. doi:10.1038/nature21360.
^ Grush, Loren (22 February 2017). "This solar system of seven Earth-sized planets may be the best place to look for alien life".
^ "Largest batch of Earth-size, habitable zone planets". Exoplanets Exploration. Nasa.
^ "Ultracool Dwarf and the Seven Planets - Temperate Earth-sized Worlds Found in Extraordinarily Rich Planetary System". www.eso.org. Diakses tanggal 22 February 2017.
^ "Artist's view of planets transiting red dwarf star in TRAPPIST-1 system". www.spacetelescope.org. Diakses tanggal 21 July 2016.

Bacaan lanjutan

Thomas Levenson (May 2, 2016). "Astronomers Have Found Planets in the Habitable Zone of a Nearby Star". The Atlantic. Diakses tanggal July 31, 2016.

Pranala luar

NASA Discovers 7 Planets Orbiting TRAPPIST 1
TRAPPIST-1, Planetary system website.
ESOcast 83: Ultracool dwarf star with planets (video) Diarsipkan 2016-06-11 di Wayback Machine.
NASA Briefing on the Discovery of TRAPPIST-1's 7 Planets

[4] rdasarkan estimasi jenis spektral fotometrik

[luminosity_visual-6] Dengan mengambil magnitudo visual absolut TRAPPIST-1 $\scriptstyle M_{V_{\ast }}=18.4$ dan magnitudo visual absolut Matahari $\scriptstyle M_{V_{\odot }}=4.83$ , luminositas visual dapat dihitung dengan $\scriptstyle {\frac {L_{V_{\ast }}}{L_{V_{\odot }}}}=10^{0.4\left(M_{V_{\odot }}-M_{V_{\ast }}\right)}$

[universalgravity-7] Gravitasi permukaan dihitung langsung dari Hukum gravitasi universal Newton, dengan rumus $\scriptstyle g={\frac {GM}{r^{2}}}$ di mana M adalah massa objek, r adalah radiusnya, dan G adalah konstanta gravitasi.

[OEC-TRAPPIST1b-1] "TRAPPIST-1b". Open Exoplanet Catalogue. Diarsipkan dari versi asli tanggal 2016-11-06. Diakses tanggal 2 May 2016.

[2MASS_Cat-2] Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (June 2003). "2MASS All Sky Catalog of point sources". VizieR Online Data Catalog. European Southern Observatory with data provided by the SAO/NASA Astrophysics Data System. 2246. Bibcode:2003yCat.2246....0C.

[Solar_neighborhood-3] Costa, E.; Mendez, R.A.; Jao, W.-C.; Henry, T.J.; Subasavage, J.P.; Ianna, P.A. (August 4, 2006). "The Solar Neighborhood. XVI. Parallaxes from CTIOPI: Final Results from the 1.5 m Telescope Program" (PDF). The Astronomical Journal. The American Astronomical Society. 132 (3): 1234. Bibcode:2006AJ....132.1234C. doi:10.1086/505706.

[Gillon2016-5] Gillon, M.; Jehin, E.; Lederer, S. M.; Delrez, L.; De Wit, J.; Burdanov, A.; Van Grootel, V.; Burgasser, A. J.; Triaud, A. H. M. J.; Opitom, C.; Demory, B.-O.; Sahu, D. K.; Bardalez Gagliuffi, D.; Magain, P.; Queloz, D. (2016). "Temperate Earth-sized planets transiting a nearby ultracool dwarf star" (PDF). Nature. 533 (7602): 221–224. Bibcode:2016Natur.533..221G. doi:10.1038/nature17448.

[Viti'99-8] Viti, Serena; Jones,, Hugh R. A. (November 1999). "Gravity dependence at the bottom of the main sequence". Astronomy and Astrophysics. 351: 1028–1035. Bibcode:1999A&A...351.1028V. Diakses tanggal 6 May 2016.

[9] "2MASS J23062928-0502285".

[eso.org-10] "Three Potentially Habitable Worlds Found Around Nearby Ultracool Dwarf Star - Currently the best place to search for life beyond the Solar System". European Southern Observatory (dalam bahasa Inggris). Diakses tanggal 2016-05-02.

[NYT-20170222-11] Chang, Kenneth (22 February 2017). "7 Earth-Size Planets Identified in Orbit Around a Dwarf Star". New York Times. Diakses tanggal 22 February 2017.

[Guardian-12] "Could these newly-discovered planets orbiting an ultracool dwarf host life?". The Guardian. 2 May 2016.

[13] "Three New Planets Are the Best Bets for Life". Popular Mechanics. 2 May 2016. Diakses tanggal 2 May 2016.

[SpaceRef-14] "Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1". SpaceRef. 22 February 2017. Diakses tanggal 11 February 2017. ^{[pranala nonaktif permanen]}

[15] "NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star". Exoplanet Exploration: Planets Beyond our Solar System (Siaran pers). Diakses tanggal 22 February 2017.

[16] "NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star". Exoplanet Exploration: Planets Beyond our Solar System. NASA. Diakses tanggal 22 February 2017.

[17] Bryant, Tracey (22 February 2017). "Celestial Connection". University of Delaware.

[18] Gramer, Robbie (22 February 2017). "News So Foreign It's Out of This World: Scientists Discover Seven New Potentially Habitable Planets". Foreign Policy.

[19] "New National Telescope at La Silla—TRAPPIST to Scout the Sky and Uncover Exoplanets and Comets (eso1023 — Organisation Release)". www.eso.org. ESO. 8 June 2010. Diakses tanggal 4 January 2015.

[planetnaming-20] Hessman, F. V.; Dhillon, V. S.; Winget, D. E.; Schreiber, M. R.; Horne, K.; Marsh, T. R.; Guenther, E.; Schwope, A. et al. (2010). "On the naming convention used for multiple star systems and extrasolar planets". arΧiv:1012.0707 [astro-ph.SR].

[21] Williams, Matt (24 September 2016). "What is the Life Cycle Of The Sun?". Universe Today. Diakses tanggal 19 February 2011.

[22] Cain, Fraser (23 December 2015). "Temperature of the Sun". Universe Today. Diakses tanggal 19 February 2011.

[nasa.gov-23] "NASA Telescope Reveals Largest Batch of Earth-Size, Habitable-Zone Planets Around Single Star" (Siaran pers). NASA.

[JPL_image-24] "TRAPPIST-1 Planet Lineup". jpl.nasa.gov.

[Gillon2017-25] Gillon, Michaël; Triaud, Amaury H. M. J.; Demory, Brice-Olivier; Jehin, Emmanuël; Agol, Eric; Deck, Katherine M.; Lederer, Susan M.; Wit, Julien de; Burdanov, Artem; Ingalls, James G.; Bolmont, Emeline; Leconte, Jeremy; Raymond, Sean N.; Selsis, Franck; Turbet, Martin; Barkaoui, Khalid; Burgasser, Adam; Burleigh, Matthew R.; Carey, Sean J.; Chaushev, Aleksander; Copperwheat, Chris M.; Delrez, Laetitia; Fernandes, Catarina S.; Holdsworth, Daniel L.; Kotze, Enrico J.; Grootel, Valérie Van; Almleaky, Yaseen; Benkhaldoun, Zouhair; Magain, Pierre; Queloz, Didier (2017). "Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1". Nature. 542: 456–460. doi:10.1038/nature21360.

[Gillon2018-26] Gillon, M.; Triaud, A. H. M. J.; Demory, B.-O.; Jehin, E.; Agol, E.; Deck, K. M.; Lederer, S. M.; De Wit, J.; Burdanov, A.; Ingalls, J. G.; Bolmont, E.; Leconte, J.; Raymond, S. N.; Selsis, F.; Turbet, M.; Barkaoui, K.; Burgasser, A.; Burleigh, M. R.; Carey, S. J.; Chaushev, A.; Copperwheat, C. M.; Delrez, L.; Fernandes, C. S.; Holdsworth, D. L.; Kotze, E. J.; Van Grootel, V.; Almleaky, Y.; Benkhaldoun, Z.; Magain, P.; Queloz, D. (2017). "Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1" (PDF). Nature. 542 (7642): 456. doi:10.1038/nature21360.

[27] Grush, Loren (22 February 2017). "This solar system of seven Earth-sized planets may be the best place to look for alien life".

[28] "Largest batch of Earth-size, habitable zone planets". Exoplanets Exploration. Nasa.

[29] "Ultracool Dwarf and the Seven Planets - Temperate Earth-sized Worlds Found in Extraordinarily Rich Planetary System". www.eso.org. Diakses tanggal 22 February 2017.

[30] "Artist's view of planets transiting red dwarf star in TRAPPIST-1 system". www.spacetelescope.org. Diakses tanggal 21 July 2016.

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@@ Baris 1: / Baris 1: @@
 {{Starbox begin
-| name = TRAPPIST-1<ref name="OEC-TRAPPIST1b">{{cite web |url=http://www.openexoplanetcatalogue.com/planet/TRAPPIST-1b/|title=TRAPPIST-1b|publisher=Open Exoplanet Catalogue|access-date=2 May 2016}}</ref>
+| name = TRAPPIST-1<ref name="OEC-TRAPPIST1b">{{cite web|url=http://www.openexoplanetcatalogue.com/planet/TRAPPIST-1b/|title=TRAPPIST-1b|publisher=Open Exoplanet Catalogue|access-date=2 May 2016|archive-date=2016-11-06|archive-url=https://web.archive.org/web/20161106043734/http://www.openexoplanetcatalogue.com/planet/TRAPPIST-1b/|dead-url=yes}}</ref>
 }}
 {{Starbox image
-| image = [[Berkas:PIA21429 - Transit Illustration of TRAPPIST-1.jpg|250px]]
+| image = [[Berkas:The ultracool dwarf star TRAPPIST-1 in the constellation of Aquarius.tif|250px]]
-| caption = Impresi artis TRAPPIST-1 dan tujuh planetnya
+| caption = Lokasi TRAPPIST-1 di rasi bintang [[Akuarius]].
 | credit =
 }}
@@ Baris 12: / Baris 12: @@
 | ra = {{RA|23|06|29.283}}<ref name="2MASS Cat">{{Cite journal|title=[[2MASS]] All Sky Catalog of point sources|last1=Cutri|first1=R. M.|last2=Skrutskie|first2=M. F.|last3=Van Dyk|first3=S.|last4=Beichman|first4=C. A.|last5=Carpenter|first5=J. M.|last6=Chester|first6=T.|last7=Cambresy|first7=L.|last8=Evans|first8=T.|last9=Fowler|first9=J.|last10=Gizis|first10=J.|last11=Howard|first11=E.|last12=Huchra|first12=J.|last13=Jarrett|first13=T.|last14=Kopan|first14=E. L.|last15=Kirkpatrick|first15=J. D.|last16=Light|first16=R. M.|last17=Marsh|first17=K. A.|last18=McCallon|first18=H.|last19=Schneider|first19=S.|last20=Stiening|first20=R.|last21=Sykes|first21=M.|last22=Weinberg|first22=M.|last23=Wheaton|first23=W. A.|last24=Wheelock|first24=S.|last25=Zacarias|first25=N.|publisher=[[European Southern Observatory]] with data provided by the [[Smithsonian Astrophysical Observatory|SAO]]/[[NASA]] [[Astrophysics Data System]]|journal=[[VizieR]] Online Data Catalog|volume=2246|date=June 2003|bibcode=2003yCat.2246....0C}}</ref>
 | dec = {{DEC|–05|02|28.59}}<ref name="2MASS Cat"/>
-| appmag_v = 18.80
+| appmag_v = {{val|18.80}}
 }}
 {{Starbox character
 | type
 | class = M8V<ref name="Solar neighborhood">{{Cite journal|title=The Solar Neighborhood. XVI. Parallaxes from CTIOPI: Final Results from the 1.5 m Telescope Program|url=http://iopscience.iop.org/article/10.1086/505706/pdf|format=PDF|last1=Costa|first1=E.|last2=Mendez|first2=R.A.|last3=Jao|first3=W.-C.|last4=Henry|first4=T.J.|last5=Subasavage|first5=J.P.|last6=Ianna|first6=P.A.|journal=[[The Astronomical Journal]]|volume=132|pages=1234|number=3|date=August 4, 2006|publisher=[[The American Astronomical Society]]|doi=10.1086/505706|bibcode=2006AJ....132.1234C}}</ref><br>M8.2V<ref group="note">berdasarkan estimasi jenis spektral fotometrik</ref>
-| r-i = 2.47
+| r-i = {{val|2.47}}
-| v-r = 2.33
+| v-r = {{val|2.33}}
 | b-v =
 | u-b =
@@ Baris 24: / Baris 24: @@
 }}
 {{Starbox astrometry
-| radial_v = −56.3
+| radial_v = {{val|−56.3}}
 | prop_mo_ra =
 | prop_mo_dec =
@@ Baris 30: / Baris 30: @@
 | p_error =
 | parallax_footnote =
-| dist_ly = 39.5 ± 1.3
+| dist_ly = {{val|39.5|1.3}}
-| dist_pc = 12.1 ± 0.4
+| dist_pc = {{val|12.1|0.4}}
-| absmag_v = 18.4 ± 0.1
+| absmag_v = {{val|18.4|0.1}}
 }}
 {{Starbox detail
-| metal = 0.04 ± 0.08
+| metal = {{val|0.04|0.08}}
-| mass = 0.08 ± 0.009
+| mass = {{val|0.08|0.009}}
-| mass_mj = 83.8048 ± 9.428
+| mass_mj = {{val|83.8048|9.428}}
-| radius = 0.114 ± 0.006
+| radius = {{val|0.114|0.006}}
-| temperature = 2550 ± 55
+| temperature = {{val|2550|55|fmt=points}}
-| luminosity_bolometric = {{nowrap|0.000525±0.000036}}<ref name="Gillon2016">{{cite journal|title=Temperate Earth-sized planets transiting a nearby ultracool dwarf star |journal=[[Nature (journal)|Nature]] |volume=533 |issue=7602 |pages=221–224 |year=2016 | url= http://www.eso.org/public/archives/releases/sciencepapers/eso1615/eso1615a.pdf |doi=10.1038/nature17448 |last1=Gillon |first1=M. |last2=Jehin |first2=E. |last3=Lederer |first3=S. M. |last4=Delrez |first4=L. |last5=De Wit |first5=J. |last6=Burdanov |first6=A. |last7=Van Grootel |first7=V. |last8=Burgasser |first8=A. J. |last9=Triaud |first9=A. H. M. J. |last10=Opitom |first10=C. |last11=Demory |first11=B.-O. |last12=Sahu |first12=D. K. |last13=Bardalez Gagliuffi |first13=D. |last14=Magain |first14=P. |last15=Queloz |first15=D. |bibcode=2016Natur.533..221G }}</ref>
+| luminosity_bolometric = {{val|0.000525|0.000036}}<ref name="Gillon2016">{{cite journal|title=Temperate Earth-sized planets transiting a nearby ultracool dwarf star |journal=[[Nature (journal)|Nature]] |volume=533 |issue=7602 |pages=221–224 |year=2016 | url= http://www.eso.org/public/archives/releases/sciencepapers/eso1615/eso1615a.pdf |doi=10.1038/nature17448 |last1=Gillon |first1=M. |last2=Jehin |first2=E. |last3=Lederer |first3=S. M. |last4=Delrez |first4=L. |last5=De Wit |first5=J. |last6=Burdanov |first6=A. |last7=Van Grootel |first7=V. |last8=Burgasser |first8=A. J. |last9=Triaud |first9=A. H. M. J. |last10=Opitom |first10=C. |last11=Demory |first11=B.-O. |last12=Sahu |first12=D. K. |last13=Bardalez Gagliuffi |first13=D. |last14=Magain |first14=P. |last15=Queloz |first15=D. |bibcode=2016Natur.533..221G }}</ref>
-| luminosity_visual = 0.00000373<ref name=luminosity_visual group=note/>
+| luminosity_visual = {{val|0.00000373}}<ref name=luminosity_visual group=note/>
-| gravity =~5.227<ref group="note" name=universalgravity/><ref name="Viti'99">{{cite journal |last=Viti |first=Serena |last2=Jones, |first2=Hugh R. A. |date=November 1999 |title=Gravity dependence at the bottom of the main sequence |url=http://adsabs.harvard.edu/full/1999A%26A...351.1028V |journal=Astronomy and Astrophysics |publisher= |volume=351 |issue= |pages=1028–1035 |bibcode=1999A&A...351.1028V |access-date=6 May 2016}}</ref>
+| gravity = ±{{val|5.227}}<ref group="note" name=universalgravity/><ref name="Viti'99">{{cite journal |last=Viti |first=Serena |last2=Jones, |first2=Hugh R. A. |date=November 1999 |title=Gravity dependence at the bottom of the main sequence |url=http://adsabs.harvard.edu/full/1999A%26A...351.1028V |journal=Astronomy and Astrophysics |publisher= |volume=351 |issue= |pages=1028–1035 |bibcode=1999A&A...351.1028V |access-date=6 May 2016}}</ref>
-| rotation = {{nowrap|1.40 ± 0.05}} days
+| rotation = {{val|1.40|0.05|u=hari}}
-| rotational_velocity = {{nowrap|6 ± 2}}
+| rotational_velocity = {{val|6|2}}
 | age_gyr = > 1
 }}
@@ Baris 56: / Baris 56: @@
 }}
 {{Starbox end}}
+'''TRAPPIST-1''', juga dikenal sebagai '''2MASS J23062928-0502285''',<ref>{{cite web|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=2MASS+J23062928-0502285|title=2MASS J23062928-0502285|publisher=}}</ref> adalah sebuah bintang [[katai merah]] [[katai ultradingin|ultradingin]]<ref name="Gillon2016" /><ref name="eso.org">{{Cite web |url=https://www.eso.org/public/news/eso1615/ |title=Three Potentially Habitable Worlds Found Around Nearby Ultracool Dwarf Star - Currently the best place to search for life beyond the Solar System |website=European Southern Observatory|language=en-GB |access-date=2016-05-02}}</ref> berjarak 39 tahun cahaya (12 parsec; 370 petameter) dari Bumi dalam rasi bintang [[Akuarius]].<ref name="NYT-20170222">{{cite news |last=Chang |first=Kenneth |title=7 Earth-Size Planets Identified in Orbit Around a Dwarf Star |url=https://www.nytimes.com/2017/02/22/science/trappist-1-exoplanets-nasa.html |date=22 February 2017 |work=[[New York Times]] |accessdate=22 February 2017 }}</ref>
-[[Berkas:The ultracool dwarf star TRAPPIST-1 in the constellation of Aquarius.tif|thumb|Posisi TRAPPIST-1 (warna merah) dalam konstelasi Akuarius (Pengangkut Air).]]
+Pada tahun 2015, tim astronom yang dipimpin oleh [[Michaël Gillon]] di [[Universitas Liège]], [[Belgia]] menggunakan [[fotometri transit]] bersama dengan ''Transiting Planets and Planetesimals Small Telescope'' ([[TRAPPIST]]) di [[Observatorium La Silla]] di Chili untuk menemukan tiga planet seukuran Bumi yang sedang mengorbit bintang katai.<ref name="eso.org"/><ref name="Guardian">{{cite web|url=https://www.theguardian.com/science/2016/may/02/could-these-newly-discovered-planets-orbiting-an-ultracool-dwarf-host-life|title=Could these newly-discovered planets orbiting an ultracool dwarf host life?|work=[[The Guardian]]|date=2 May 2016}}</ref><ref>{{Cite web|url= http://www.popularmechanics.com/space/deep-space/a20671/three-planets-life-outside-the-solar-system/ |title=Three New Planets Are the Best Bets for Life |work=[[Popular Mechanics]] |date=2 May 2016 |access-date=2 May 2016}}</ref> Tanggal 22 Februari 2017, para ahli astronomi mengumumkan empat [[eksoplanet]] tambahan sekitar TRAPPIST-1. Selain TRAPPIST, pekerjaan ini memanfaatkan antara lain [[Very Large Telescope]] di Paranal dan [[Teleskop luar angkasa Spitzer]] NASA, dan menemukan total jumlah planet menjadi tujuh, di mana tiga di antaranya dianggap berada dalam [[zona laik huni]].<ref name="SpaceRef">{{cite web |url=http://spaceref.com/astronomy/temperate-earth-sized-planets-found-in-extraordinarily-rich-planetary-system-trappist-1.html |title=Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1 |date=22 February 2017 |author= |publisher=SpaceRef |accessdate=11 February 2017 }}{{Pranala mati|date=Juli 2023 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{Cite press release|url=https://exoplanets.nasa.gov/news/1419/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around-single-star/|title=NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star|newspaper=Exoplanet Exploration: Planets Beyond our Solar System|access-date=22 February 2017}}</ref> Yang lainnya juga mungkin dipercaya laik dihuni (memiliki air cair di suatu tempat di permukaannya).<ref name="SpaceRef"/><ref>{{Cite news|url= https://exoplanets.nasa.gov/news/1419/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around-single-star/|title= NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star |newspaper= Exoplanet Exploration: Planets Beyond our Solar System |access-date= 22 February 2017 |publisher= [[NASA]]}}</ref>
-'''TRAPPIST-1''', juga dikenal sebagai '''2MASS J23062928-0502285''',<ref>{{cite web|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=2MASS+J23062928-0502285|title=2MASS J23062928-0502285|publisher=}}</ref> adalah sebuah bintang [[kerdil ultradingin]]<ref name="Gillon2016">{{cite |url=http://www.eso.org/public/archives/releases/sciencepapers/eso1615/eso1615a.pdf |title=Temperate Earth-sized planets transiting a nearby ultracool dwarf star] |publisher=[[European Southern Observatory]]|format=pdf}}</ref><ref name="eso.org">{{Cite web |url=https://www.eso.org/public/news/eso1615/ |title=Three Potentially Habitable Worlds Found Around Nearby Ultracool Dwarf Star - Currently the best place to search for life beyond the Solar System |website=European Southern Observatory|language=en-GB |access-date=2016-05-02}}</ref> berjarak 39 tahun cahaya (12 parsec; 370 petameter) dari Bumi dalam konstelasi [[Akuarius]].<ref name="NYT-20170222">{{cite news |last=Chang |first=Kenneth |title=7 Earth-Size Planets Identified in Orbit Around a Dwarf Star |url=https://www.nytimes.com/2017/02/22/science/trappist-1-exoplanets-nasa.html |date=22 February 2017 |work=[[New York Times]] |accessdate=22 February 2017 }}</ref>
-Pada tahun 2015, tim astronom yang dipimpin oleh [[Michaël Gillon]] di [[Universitas Liège]],  [[Belgia]] menggunakan [[fotometri transit]] bersama dengan ''Transiting Planets and Planetesimals Small Telescope'' ([[TRAPPIST]]) di [[Observatorium La Silla]] di Chili untuk menemukan tiga planet seukuran Bumi yang sedang mengorbit bintang kerdil.<ref name="Guardian">{{cite web|url=https://www.theguardian.com/science/2016/may/02/could-these-newly-discovered-planets-orbiting-an-ultracool-dwarf-host-life|title=Could these newly-discovered planets orbiting an ultracool dwarf host life?|work=[[The Guardian]]|date=2 May 2016}}</ref><ref name="eso.org"/><ref>{{Cite web|url= http://www.popularmechanics.com/space/deep-space/a20671/three-planets-life-outside-the-solar-system/ |title=Three New Planets Are the Best Bets for Life |work=[[Popular Mechanics]] |date=2 May 2016 |access-date=2 May 2016}}</ref> Tanggal 22 Februari 2017, para ahli astronomi mengumumkan empat [[eksoplanet]] tambahan sekitar TRAPPIST-1. Selain TRAPPIST, pekerjaan ini memanfaatkan antara lain [[Very Large Telescope]] di Paranal dan [[Teleskop luar angkasa Spitzer]] NASA, dan menemukan total jumlah planet menjadi tujuh, di mana tiga di antaranya dianggap berada dalam [[zona layak huni]].<ref>{{cite web |url=http://spaceref.com/astronomy/temperate-earth-sized-planets-found-in-extraordinarily-rich-planetary-system-trappist-1.html |title=Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1 |date=22 February 2017 |author= |publisher=SpaceRef |accessdate=11 February 2017 }}</ref><ref>{{Cite press release|url=https://exoplanets.nasa.gov/news/1419/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around-single-star/|title=NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star|newspaper=Exoplanet Exploration: Planets Beyond our Solar System|access-date=22 February 2017}}</ref> Yang lainnya juga mungkin dipercaya layak dihuni (memiliki air cair di suatu tempat di permukaan mereke).<ref>{{cite web |url=http://spaceref.com/astronomy/temperate-earth-sized-planets-found-in-extraordinarily-rich-planetary-system-trappist-1.html |title=Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1 |date=22 February 2017 |author= |publisher=SpaceRef |accessdate=11 February 2017 }}</ref><ref>{{Cite news|url= https://exoplanets.nasa.gov/news/1419/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around-single-star/|title= NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star |newspaper= Exoplanet Exploration: Planets Beyond our Solar System |access-date= 22 February 2017 |publisher= [[NASA]]}}</ref>
 == Penemuan dan penamaan ==
+Bintang di pusat sistem ditemukan tahun 1999 pada saat ''Two Micron All-Sky Survey'' ([[2MASS]]).<ref>{{cite web|url=http://www.udel.edu/udaily/2017/february/star-connection/ |title=Celestial Connection |last=Bryant |first=Tracey |date=22 February 2017|publisher=University of Delaware}}</ref> Hal tersebut masuk dalam katalog berikutnya dengan penamaan "2MASS J23062928-0502285". Angka-angkanya mengacu pada [[asensio rekta]] dan [[deklinasi]] dari posisi bintang di langit dan "J" mengacu pada [[Epoch (astronomi)#Tahun Julian dan J2000|Julian Epoch]].
-Tim penjelejahan dibentuk dan dimulai pada Bulan September hingga Desember 2015 dan mengumumkan pencariannya pada Mei 2016 pada Majalah ''[[Nature (journal)|Nature]]''.<ref name="Guardian" /><ref name = "Gillon2016">{{cite journal|title=Temperate Earth-sized planets transiting a nearby ultracool dwarf star |journal=[[Nature (journal)|Nature]] |volume=533 |issue=7602 |pages=221–224 |year=2016 | url= http://www.eso.org/public/archives/releases/sciencepapers/eso1615/eso1615a.pdf |doi=10.1038/nature17448 |last1=Gillon |first1=M. |last2=Jehin |first2=E. |last3=Lederer |first3=S. M. |last4=Delrez |first4=L. |last5=De Wit |first5=J. |last6=Burdanov |first6=A. |last7=Van Grootel |first7=V. |last8=Burgasser |first8=A. J. |last9=Triaud |first9=A. H. M. J. |last10=Opitom |first10=C. |last11=Demory |first11=B.-O. |last12=Sahu |first12=D. K. |last13=Bardalez Gagliuffi |first13=D. |last14=Magain |first14=P. |last15=Queloz |first15=D. }}</ref>
+Sistem ini kemudian dipelajari oleh sebuah tim di [[Universitas Liège]], yang membuat observasi awal mereka menggunakan ''Transiting Planets and Planetesimals Small Telescope–South'' dari bulan September hingga Desember 2015 dan mengumumkan temuan mereka dalam edisi Mei 2016 Jurnal ''[[Nature]]''.<ref name = "Gillon2016" /><ref name="Guardian" />[[Akronim]] teleskop robotik dari TRAPPIST menekankan bahwa proyek ini berasal dari Belgia, menunjukkan seperti halnya [[ordo keagamaan]] kontemplatif dari para [[Trapis]] (para astronom merayakan penemuan mereka dengan satu ronde [[bir Trapis]] kontemplatif,<ref>{{cite web|url=http://foreignpolicy.com/2017/02/22/new-terrestrial-planets-discovered-by-international-scientists-international-collaboration-maybe-theres-some-aliens/|title=News So Foreign It’s Out of This World: Scientists Discover Seven New Potentially Habitable Planets|last=Gramer|first=Robbie|date=22 February 2017|publisher=[[Foreign Policy]]}}</ref> yang mereka junjung tinggi).<ref>{{cite web | url = http://www.eso.org/public/news/eso1023/ | title = New National Telescope at La Silla—TRAPPIST to Scout the Sky and Uncover Exoplanets and Comets (eso1023 — Organisation Release) | date = 8 June 2010 | website = www.eso.org | publisher = ESO | accessdate = 4 January 2015}}</ref> Karena bintang yang dikitari eksoplanet pertama ditemukan dengan teleskop ini, maka para penemu menamakannya "TRAPPIST-1".
-Nama Bintang TRAPPIST-1, mengacu  kepada penemuan pertama yang dilakukan menggunakan teleskop [[TRAPPIST]] yang berfungsi melihat perpindahan planet.
-Planet dirancang dan diurutkan berdasarkan penemuanya, dimulai dari planet b, yaitu planet paling awal, kemudian planet c dan seterusnya.<ref name="planetnaming">{{cite arXiv |title=On the naming convention used for multiple star systems and extrasolar planets |date=2010 |last1=Hessman |first1=F. V. |last2=Dhillon |first2=V. S. |last3=Winget |first3=D. E. |last4=Schreiber |first4=M. R. |last5=Horne |first5=K. |last6=Marsh |first6=T. R. |last7=Guenther |first7=E. |last8=Schwope |first8=A. |last9=Heber |first9=U. |eprint=1012.0707|class=astro-ph.SR }}</ref> Tiga planet pertama pada penemuaanya di TRAPPIST-1 dtemukan dan diurutkan berdasarkan periode revolusi,<ref name="Gillon2016" /> dan pengelompokan selanjutnya yaitu e sampai h.
+Planet dinamakan berdasarkan urutan penemuanya, dimulai dengan ''b'' untuk planet yang pertama ditemukan, ''c'' untuk yang kedua dan seterusnya.<ref name="planetnaming">{{cite arXiv |title=On the naming convention used for multiple star systems and extrasolar planets |date=2010 |last1=Hessman |first1=F. V. |last2=Dhillon |first2=V. S. |last3=Winget |first3=D. E. |last4=Schreiber |first4=M. R. |last5=Horne |first5=K. |last6=Marsh |first6=T. R. |last7=Guenther |first7=E. |last8=Schwope |first8=A. |last9=Heber |first9=U. |eprint=1012.0707|class=astro-ph.SR }}</ref> Tiga planet di sekitar TRAPPIST-1 yang pertama ditemukan dan diberi nama ''b'', ''c'', dan ''d'' berdasarkan kenaikan periode orbit,<ref name="Gillon2016" /> dan kelompok kedua penemuan dengan cara yang sama diberi nama ''e'' sampai ''h''.
 == Karakteristik bintang ==
-TRAPPIST-1 merupakan sebuah bintang [[kerdil ultradingin]], dengan kelas spektral M8,0 ± 0,5, yang kira-kira 8% massa dan 11% radius dari [[Matahari]]. Temperaturnya 2550 [[skala Kelvin|K]] dan sedikitnya berusia 500 juta tahun.<ref name="Gillon2016" /> Sebagai perbandingan, [[Matahari]] berusia sekitar 4,6 miliar tahun<ref>{{cite web |url=http://www.universetoday.com/18847/life-of-the-sun/ |title=What is the Life Cycle Of The Sun?|author=Williams, Matt |date=24 September 2016 |work= |publisher=Universe Today |accessdate=19 February 2011}}</ref> dan memiliki temperatur 5778 K.<ref>{{cite web |url=http://www.universetoday.com/18092/temperature-of-the-sun/ |title=Temperature of the Sun |author=Cain, Fraser |date=23 December 2015  |work= |publisher=Universe Today |accessdate=19 February 2011}}</ref>
+TRAPPIST-1 merupakan sebuah bintang [[katai ultradingin]], dengan kelas spektral M8,0 ± 0,5, yang kira-kira 8% massa dan 11% radius dari [[Matahari]]. Temperaturnya 2550 [[skala Kelvin|K]] dan sedikitnya berusia 500 juta tahun.<ref name="Gillon2016" /> Sebagai perbandingan, [[Matahari]] berusia sekitar 4,6 miliar tahun<ref>{{cite web |url=http://www.universetoday.com/18847/life-of-the-sun/ |title=What is the Life Cycle Of The Sun?|author=Williams, Matt |date=24 September 2016 |work= |publisher=Universe Today |accessdate=19 February 2011}}</ref> dan memiliki temperatur 5778 K.<ref>{{cite web |url=http://www.universetoday.com/18092/temperature-of-the-sun/ |title=Temperature of the Sun |author=Cain, Fraser |date=23 December 2015  |work= |publisher=Universe Today |accessdate=19 February 2011}}</ref>
 == Sistem keplanetan ==
-Pada Februari 2017 para ahli astronomi mengumumkan penemuan sistem keplanetan dari bintang ini yang tersusun atas tujuh planet mirip Bumi (''[[TRAPPIST-1e|e]]'', ''[[TRAPPIST-1f|f]]'', ''[[TRAPPIST-1g|g]]'') tiga di antaranya mengorbit dalam zona layak huni.<ref name="nasa.gov">{{Cite press release |title=NASA Telescope Reveals Largest Batch of Earth-Size, Habitable-Zone Planets Around Single Star |publisher=[[NASA]] |url=https://www.nasa.gov/press-release/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around}}</ref><ref name="JPL image">{{Cite web |url=http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA21422 |title=TRAPPIST-1 Planet Lineup |website=jpl.nasa.gov}}</ref><ref name="SPACE.com"/>
+Pada Februari 2017 para ahli astronomi mengumumkan penemuan sistem keplanetan dari bintang ini yang tersusun atas tujuh planet mirip Bumi (''[[TRAPPIST-1e|e]]'', ''[[TRAPPIST-1f|f]]'', ''[[TRAPPIST-1g|g]]'') tiga di antaranya mengorbit dalam zona laik huni.<ref name="nasa.gov">{{Cite press release |title=NASA Telescope Reveals Largest Batch of Earth-Size, Habitable-Zone Planets Around Single Star |publisher=[[NASA]] |url=https://www.nasa.gov/press-release/nasa-telescope-reveals-largest-batch-of-earth-size-habitable-zone-planets-around}}</ref><ref name="JPL image">{{Cite web |url=http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA21422 |title=TRAPPIST-1 Planet Lineup |website=jpl.nasa.gov}}</ref>
 {{OrbitboxPlanet begin
 | name = TRAPPIST-1
-| table_ref = <ref name="Gillon2016"/><ref name = "Gillon2017">{{cite journal|url=http://www.eso.org/public/archives/releases/sciencepapers/eso1706/eso1706a.pdf |title=Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1|journal= Nature|volume= 542|issue= 7642|pages= 456|doi= 10.1038/nature21360|year= 2017|last1= Gillon|first1=M.|last2= Triaud|first2=A. H. M. J.|last3= Demory|first3=B.-O.|last4= Jehin|first4= E.|last5= Agol|first5=E.|last6= Deck|first6=K. M.|last7= Lederer|first7=S. M.|last8=De Wit|first8=J.|last9= Burdanov|first9=A.|last10= Ingalls|first10=J. G.|last11= Bolmont|first11=E.|last12= Leconte|first12=J.|last13= Raymond|first13=S. N.|last14= Selsis|first14=F.|last15= Turbet|first15=M.|last16= Barkaoui|first16=K.|last17= Burgasser|first17=A.|last18= Burleigh|first18=M. R.|last19= Carey|first19=S. J.|last20= Chaushev|first20=A.|last21= Copperwheat|first21=C. M.|last22= Delrez|first22=L.|last23= Fernandes|first23=C. S.|last24= Holdsworth|first24=D. L.|last25= Kotze|first25=E. J.|last26= Van Grootel|first26=V.|last27= Almleaky|first27=Y.|last28= Benkhaldoun|first28=Z.|last29= Magain|first29=P.|last30= Queloz|first30=D.}}</ref>
+| table_ref = <ref name="Gillon2017">{{cite journal|title=Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1 |journal=[[Nature (journal)|Nature]] |volume=542 |issue= |pages=456–460 |year=2017 | url= |doi=10.1038/nature21360 |last1=Gillon |first1=Michaël |last2=Triaud |first2=Amaury H. M. J. |last3=Demory |first3=Brice-Olivier |last4=Jehin |first4=Emmanuël |last5=Agol |first5=Eric |last6=Deck |first6=Katherine M. |last7=Lederer |first7=Susan M. |last8=Wit |first8=Julien de |last9=Burdanov |first9=Artem |last10=Ingalls |first10=James G. |last11=Bolmont |first11=Emeline |last12=Leconte |first12=Jeremy |last13=Raymond |first13=Sean N. |last14=Selsis |first14=Franck |last15=Turbet |first15=Martin |last16=Barkaoui |first16=Khalid |last17=Burgasser |first17=Adam |last18=Burleigh |first18=Matthew R. |last19=Carey |first19=Sean J. |last20=Chaushev |first20=Aleksander |last21=Copperwheat |first21=Chris M. |last22=Delrez |first22=Laetitia |last23=Fernandes |first23=Catarina S. |last24=Holdsworth |first24=Daniel L. |last25=Kotze |first25=Enrico J. |last26=Grootel |first26=Valérie Van |last27=Almleaky |first27=Yaseen |last28=Benkhaldoun |first28=Zouhair |last29=Magain |first29=Pierre |last30=Queloz |first30=Didier }}</ref><ref name = "Gillon2018">{{cite journal|url=http://www.eso.org/public/archives/releases/sciencepapers/eso1706/eso1706a.pdf |title=Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1|journal= Nature|volume= 542|issue= 7642|pages= 456|doi= 10.1038/nature21360|year= 2017|last1= Gillon|first1=M.|last2= Triaud|first2=A. H. M. J.|last3= Demory|first3=B.-O.|last4= Jehin|first4= E.|last5= Agol|first5=E.|last6= Deck|first6=K. M.|last7= Lederer|first7=S. M.|last8=De Wit|first8=J.|last9= Burdanov|first9=A.|last10= Ingalls|first10=J. G.|last11= Bolmont|first11=E.|last12= Leconte|first12=J.|last13= Raymond|first13=S. N.|last14= Selsis|first14=F.|last15= Turbet|first15=M.|last16= Barkaoui|first16=K.|last17= Burgasser|first17=A.|last18= Burleigh|first18=M. R.|last19= Carey|first19=S. J.|last20= Chaushev|first20=A.|last21= Copperwheat|first21=C. M.|last22= Delrez|first22=L.|last23= Fernandes|first23=C. S.|last24= Holdsworth|first24=D. L.|last25= Kotze|first25=E. J.|last26= Van Grootel|first26=V.|last27= Almleaky|first27=Y.|last28= Benkhaldoun|first28=Z.|last29= Magain|first29=P.|last30= Queloz|first30=D.}}</ref>
 }}
 {{OrbitboxPlanet
 | exoplanet= [[TRAPPIST-1b|b]]
-| mass_earth =0.85±0.72
+| mass_earth = {{val|0.85|0.72}}
-| period = 1.51087081 ± 0.00000060
+| period = {{val|1.51087081|0.00000060}}
-| semimajor = 0.01111
+| semimajor = {{val|0.01111}}
-| eccentricity = < 0.081
+| eccentricity = < {{val|0.081}}
-| inclination =   89.65 ± 0.25
+| inclination =   {{val|89.65|0.25}}
-| radius_earth = 1.086 ± 0.035
+| radius_earth = {{val|1.086|0.035}}
 }}
 {{OrbitboxPlanet
 | exoplanet= [[TRAPPIST-1c|c]]
-| mass_earth =1.38±0.61
+| mass_earth = {{val|1.38|0.61}}
-| period = 2.4218233 ± 0.0000017
+| period = {{val|2.4218233|0.0000017}}
-| semimajor = 0.01522
+| semimajor = {{val|0.01522}}
-| eccentricity = < 0.083
+| eccentricity = < {{val|0.083}}
-| inclination = 89.67 ± 0.17
+| inclination = {{val|89.67|0.17}}
-| radius_earth = 1.056 ± 0.035
+| radius_earth = {{val|1.056|0.035}}
 }}
 {{OrbitboxPlanet
 | exoplanet= [[TRAPPIST-1d|d]]
-| mass_earth =0.41±0.27
+| mass_earth = {{val|0.41|0.27}}
-| period = 4.049610 ± 0.000063
+| period = {{val|4.049610|0.000063}}
-| semimajor = 0.021 ± 0.006
+| semimajor = {{val|0.021|0.006}}
-| eccentricity = < 0.070
+| eccentricity = < {{val|0.070}}
-| inclination =  89.75 ± 0.16
+| inclination = {{val|89.75|0.16}}
-| radius_earth = 0.772 ± 0.030
+| radius_earth = {{val|0.772|0.030}}
 }}
 {{OrbitboxPlanet
 | exoplanet= [[TRAPPIST-1e|e]]
-| mass_earth =0.62±0.58
+| mass_earth = {{val|0.62|0.58}}
-| period = 6.099615 ± 0.000011
+| period = {{val|6.099615|0.000011}}
-| semimajor = 0.028
+| semimajor = {{val|0.028}}
-| eccentricity = < 0.085
+| eccentricity = < {{val|0.085}}
-| inclination = 89.86 ± 0.11
+| inclination = {{val|89.86|0.11}}
-| radius_earth = 0.918 ± 0.039
+| radius_earth = {{val|0.918|0.039}}
 }}
 {{OrbitboxPlanet
 | exoplanet= [[TRAPPIST-1f|f]]
-| mass_earth =0.68±0.18
+| mass_earth = {{val|0.68|0.18}}
-| period = 9.206690 ± 0.000015
+| period = {{val|9.206690|0.000015}}
-| semimajor = 0.037
+| semimajor = {{val|0.037}}
-| eccentricity = < 0.063
+| eccentricity = < {{val|0.063}}
-| inclination = 89.680 ± 0.034
+| inclination = {{val|89.680|0.034}}
-| radius_earth = 1.045 ± 0.038
+| radius_earth = {{val|1.045|0.038}}
 }}
 {{OrbitboxPlanet
 | exoplanet= [[TRAPPIST-1g|g]]
-| mass_earth =1.34±0.88
+| mass_earth = {{val|1.34|0.88}}
-| period = 12.35294 ± 0.00012
+| period = {{val|12.35294|0.00012}}
-| semimajor = 0.045
+| semimajor = {{val|0.045}}
-| eccentricity = < 0.061
+| eccentricity = < {{val|0.061}}
-| inclination = 89.710 ± 0.025
+| inclination = {{val|89.710|0.025}}
-| radius_earth = 1.127 ± 0.041
+| radius_earth = {{val|1.127|0.041}}
 }}
 {{OrbitboxPlanet
 | exoplanet= [[TRAPPIST-1h|h]]
-| mass_earth = tidak diketahui (mungkin <1)
+| mass_earth   = {{val|0.331|0.056|-0.049}}
+| period       = {{val|18.767953|0.000080}}
-| eccentricity = tidak diketahui
+| semimajor    = {{val|0.06193488}} ({{convert|0.06193488|AU|e6km|2|disp=out|abbr=unit}})
-| inclination = 89.80 ± 0.07
-| radius_earth = 0.755 ± 0.034
+| eccentricity = {{val|0.00567|0.00121}}
+| inclination  = {{val|89.796|0.023}}
+| radius_earth = {{val|0.773|0.026|-0.027}}
 }}
 {{Orbitbox end}}
-[[Berkas:PIA21425 - TRAPPIST-1 Statistics Table.jpg|Ssc2017-01f Sm|thumb|upright=1.5|Konsep artis gambaran sistem keplanetan TRAPPIST-1 yang mungkin terlihat, berdasarkan data yang tersedia mengenai diameter, massa, dan jarak mereka dari bintang induk]]
 Ketujuh planet yang mengitari TRAPPIST-1 memiliki jarak orbit yang jauh lebih kecil dari jarak Merkurius dari Matahari. Jarak antara orbit dari TRAPPIST 1-b dengan TRAPPIST 1c sama dengan 1,6 kali jarak Bumi ke Bulan. Masing-masing planet mungkin akan terlihat lebih menonjol dari planet lainnya, dan akan lebih besar dari penampakan Bulan dari Bumi.<ref>{{cite web|url=http://www.theverge.com/2017/2/22/14674088/7-planet-solar-system-discovered-conditions-for-life-water-nature-nasa|title=This solar system of seven Earth-sized planets may be the best place to look for alien life|first=Loren|last=Grush|date=22 February 2017|publisher=}}</ref><ref>{{Cite news |url=https://exoplanets.nasa.gov/trappist1/ |title=Largest batch of Earth-size, habitable zone planets |newspaper=Exoplanets Exploration |publisher=[[Nasa]]}}</ref>{{Failed verification|date=February 2017|reason=neither source mentions "orders", exoplanets.nasa.gov has "as visible as our moon is from Earth" which is consistent, while theverge is also possibly misquoting as its maths is inconsistent with radii of Moon and exoplanets}} Satu tahun di planet terdekatnya hanya berlangsung satu setengah hari di bumi, dan jika satu tahun di planet keenamnya berlangsung 12,3 hari di bumi.
 == Galeri ==
+<gallery mode="packed" heights="150px">
+Berkas:PIA22094-TRAPPIST-1-PlanetLineup-20180205.jpg|Ssc2017-01f Sm|jmpl|upright=1.5|Konsep artis gambaran sistem keplanetan TRAPPIST-1 yang mungkin terlihat, berdasarkan data yang tersedia mengenai diameter, massa, dan jarak mereka dari bintang induk
-<gallery>
 Berkas:Artist’s impression of the TRAPPIST-1 planetary system.jpg|Impresi artis gambaran sistem keplanetan dari bintang TRAPPIST-1<ref>{{cite web|title=Ultracool Dwarf and the Seven Planets - Temperate Earth-sized Worlds Found in Extraordinarily Rich Planetary System|url=https://www.eso.org/public/news/eso1706/|website=www.eso.org|accessdate=22 February 2017}}</ref>
-Berkas:Artist's view of planets transiting red dwarf star in TRAPPIST-1 system.jpg|Impresi artis gambaran pergerakan planet terhadap bintang merah kerdil di dalam sisem TRAPPIST-1<ref>{{cite web|title=Artist's view of planets transiting red dwarf star in TRAPPIST-1 system|url=http://www.spacetelescope.org/images/opo1627a/|website=www.spacetelescope.org|accessdate=21 July 2016}}</ref>
+Berkas:Artist's view of planets transiting red dwarf star in TRAPPIST-1 system.jpg|Impresi artis gambaran pergerakan planet terhadap bintang katai merah di dalam sisem TRAPPIST-1<ref>{{cite web|title=Artist's view of planets transiting red dwarf star in TRAPPIST-1 system|url=http://www.spacetelescope.org/images/opo1627a/|website=www.spacetelescope.org|accessdate=21 July 2016}}</ref>
 Berkas:Comparison between the Sun and the ultracool dwarf star TRAPPIST-1.jpg|Impresi artis skala perbandingan antara Matahari dan TRAPPIST-1, bintang ini hanya memiliki 11% dari diameter Matahari dan memiliki warna yang lebih kemerahan.
 Berkas:TRAPPIST-1 and its three planets.jpg|Gambaran TRAPPIST-1 dan tiga planetnya.
 Berkas:Artist’s impression of the ultracool dwarf star TRAPPIST-1 from the surface of one of its planets.jpg|Impresi artis gambaran pemandangan dari TRAPPIST-1c
 Berkas:Artist’s impression of the ultracool dwarf star TRAPPIST-1 from close to one of its planets.ogv|Impresi artis video gambaran satu planet dengan tiga planet lainnya yang saling berdekatan
-Berkas:PIA21422 - TRAPPIST-1 Planet Lineup, Figure 1.jpg|NASA-JPL/Caltech : Gambaran sistem keplanetan dari TRAPPIST-1, yang kurang lebih sama
+Berkas:PIA21422 - TRAPPIST-1 Planet Lineup, Figure 1.jpg|NASA-JPL/Caltech: Gambaran sistem keplanetan dari TRAPPIST-1, yang kurang lebih sama
 Berkas:PIA21428 - TRAPPIST-1 Comparison to Solar System and Jovian Moons.jpg|Ssc2017-01g Sm|Perbandingan dengan sistem tata surya kita; Ketujuh planet dari TRAPPIST-1 yang memiliki orbit lebih kecil dari orbit Merkurius terhadap Matahari
 Berkas:A trip to TRAPPIST-1 and its seven planets.webm|Video ini menggambarkan perjalanan dari Bumi ke Bulan dan menuju ke TRAPPIST-1.
+Berkas:PIA21425 - TRAPPIST-1 Statistics Table.jpg|Atas: ilustrasi artis tentang 7 planet sistem TRAPPIST-1 (angka menunjukkan periode orbit, jarak dari bintang, jari-jari dan massa, dibandingkan dengan Bumi).<br/>Bawah: planet-planet kebumian di Tata Surya, dengan skala yang sama.
 </gallery>
@@ Baris 169: / Baris 170: @@
 == Bacaan lanjutan ==
-*{{cite web|author=Thomas Levenson|work=[[The Atlantic]]|url=http://www.theatlantic.com/science/archive/2016/05/astronomers-have-found-planets-in-the-habitable-zone/480690/|title=Astronomers Have Found Planets in the Habitable Zone of a Nearby Star|date=May 2, 2016|accessdate=July 31, 2016}}
+* {{cite web|author=Thomas Levenson|work=[[The Atlantic]]|url=http://www.theatlantic.com/science/archive/2016/05/astronomers-have-found-planets-in-the-habitable-zone/480690/|title=Astronomers Have Found Planets in the Habitable Zone of a Nearby Star|date=May 2, 2016|accessdate=July 31, 2016}}
 == Pranala luar ==
 * [https://www.youtube.com/watch?v=HraVXnHyRHI NASA Discovers 7 Planets Orbiting TRAPPIST 1]
 * [http://www.trappist.one/ TRAPPIST-1], Planetary system website.
-* [http://www.eso.org/public/usa/videos/eso1615a/ ESOcast 83: Ultracool dwarf star with planets (video)]
+* [http://www.eso.org/public/usa/videos/eso1615a/ ESOcast 83: Ultracool dwarf star with planets (video)] {{Webarchive|url=https://web.archive.org/web/20160611031307/http://www.eso.org/public/usa/videos/eso1615a/ |date=2016-06-11 }}
 * [https://www.youtube.com/watch?v=ieJIht3fnVM NASA Briefing on the Discovery of TRAPPIST-1's 7 Planets]
+{{TRAPPIST-1}}
 [[Kategori:Objek 2MASS]]