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__NOTOC__{{Starbox begin
| name = [[Bayer designation|α Arae]]}}
{{Starbox image
| image = [[Berkas:Ara constellation map.png|jmpl|kiri|250px]]
| caption = α Arae (Choo) in the constellation Ara.
}}
{{Starbox observe
| epoch = [[J2000.0]]
| equinox = [[J2000.0]] ([[International Celestial Reference System|ICRS]])
| constell = [[Ara (constellation)|Ara]]
| ra = {{RA|17|31|50.4933}}<ref name=sb0>{{SIMBAD link|alf+ara|V* alf Ara -- Eruptive variable Star}}, database entry, [[SIMBAD]]. Accessed on line November 26, 2008.</ref>
| dec = {{DEC|−49|52|34.121}}<ref name=sb0 />
| appmag_v=2.76 to 2.90<ref name=bsc1 />
}}
{{Starbox character
| class = B3Ve
| u-b = −0.69<ref name=bsc1>[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/50/catalog&recno=6510 HR 6510], database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., [[Centre de Données astronomiques de Strasbourg|CDS]] ID [http://vizier.u-strasbg.fr/viz-bin/Cat?V/50 V/50]. Accessed on line November 26, 2008.</ref>
| b-v = −0.17<ref name=bsc1 />
| r-i = −0.24<ref name=bsc1 />
| variable = [[Be star|BE]]<ref name=gcvs2>alf Ara, database entry, [http://www.sai.msu.su/groups/cluster/gcvs/gcvs/iii/iii.dat The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars], Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 26, 2008.</ref>
}}
{{Starbox astrometry
| radial_v = 0<ref name=sb0 />
| prop_mo_ra = −31.27<ref name=sb0 />
| prop_mo_dec = −67.15<ref name=sb0 />
| parallax = 13.46
| p_error = 0.95
| parallax_footnote =<ref name=sb0 />
| absmag_v= −1.5<ref group=note>From apparent magnitude and parallax.</ref>
}}
{{Starbox detail
| mass = 9.6
| temperature = 18,000
| radius = 4.8
| luminosity_bolometric = 5,800
| rotational_velocity = 375
| rotation = 12 [[hours|h]]<ref group=note>From equatorial rotational velocity of 470 km/s and radius of 4.8 R<sub>☉</sub>.</ref>
}}
{{Starbox catalog
| names=Choo, Tchou, α&nbsp;Ara, Alpha&nbsp;Arae, Alpha&nbsp;Ara, [[Double star designation|HJ&nbsp;4955A]], [[2MASS]]&nbsp;J17315049-4952341, [[AAVSO]]&nbsp;1724-49, [[Catalog of Components of Double and Multiple Stars|CCDM]]&nbsp;J17318-4953A, [[Durchmusterung|CD]]−49°11511, [[Cape Photographic Catalogue|CPC]]&nbsp;0&nbsp;16300, [[Durchmusterung|CPD]]−49°10052, [[Catalog of Stellar Identification|CSI]]-49&nbsp;11511&nbsp;21, [[EM* MWC]]&nbsp;261, [[Fifth Fundamental Catalogue|FK5]]&nbsp;651, [[Boss General Catalogue|GC]]&nbsp;23708, [[GCRV]]&nbsp;10116, [[Guide Star Catalog|GSC]]&nbsp;08350-02600, [[Henry Draper Catalogue|HD]]&nbsp;158427, [[Karl Gordon Henize#Writings|Hen]]&nbsp;3-1417, [[Hipparcos Catalogue|HIP]]&nbsp;85792, [[Bright Star Catalogue|HR]]&nbsp;6510, [[Index Catalogue of Visual Double Stars|IDS]]&nbsp;17241-4948&nbsp;A, [[IRAS]]&nbsp;17279-4950, [[JP11]]&nbsp;2859, [[Catalog of 5,268 Standard Stars Based on the Normal System N30|N30]]&nbsp;3898, [[New Catalogue of Suspected Variable Stars|NSV]]&nbsp;8999, [[General Catalogue of Trigonometric Stellar Parallaxes|PLX]]&nbsp;3969.1, [[PPM Star Catalogue|PPM]]&nbsp;323069, [[Catalogue of rotational velocities of the stars|ROT]]&nbsp;2456, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]]&nbsp;228069, [[TD1 Catalog of Stellar Ultraviolet Fluxes|TD1]]&nbsp;20501, [[Tycho Catalogue|TYC]]&nbsp;8350-2600-1, [[Photoelectric Catalogue|UBV]]&nbsp;14909, [[UBV Photoelectric Photometry Catalogue|UBV&nbsp;M]]&nbsp;22215, [[uvby98]]&nbsp;100158427&nbsp;A, [[Washington Double Star Catalog|WDS]]&nbsp;17318-4953A.<ref name=sb0 />}}
{{Starbox reference
| Simbad=alf+ara}}
{{Starbox end}}
'''Alpha Arae (Alpha Ara / α Arae / α Ara)''' merupakan [[bintang]] tercerah kedua di [[rasi]] [[Ara]]. [[Bintang]] ini memiliki jarak 242 [[tahun cahaya]] dari [[Bumi]] dan ber[[magnitudo]] 2.84.
'''Alpha Arae (Alpha Ara / α Arae / α Ara)''' merupakan [[bintang]] tercerah kedua di [[rasi]] [[Ara]]. [[Bintang]] ini memiliki jarak 242 [[tahun cahaya]] dari [[Bumi]] dan ber[[magnitudo]] 2.84.


== Etimologi ==
== Etimologi ==


[[Bintang]] ini memiliki nama tradisional '''Tchou''' atau '''Choo''', dari bahasa [[China]] 杵, atau [[Mandarin]] ''chǔ'', yang berarti "alat penumbuk". Nama lain dari para astronom terdahulu adalah :
[[Bintang]] ini memiliki nama tradisional '''Tchou''' atau '''Choo''', dari bahasa [[China]] 杵, atau [[Mandarin]] ''chǔ'', yang berarti "alat penumbuk". Nama lain dari para astronom terdahulu adalah:


{| class="wikitable"
{| class="wikitable"
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! arti
! arti
|-
|-
| 杵二 / Chǔèr || [[China]] / [[Mandarin]] || bintang kedua pada [[rasi]] [[alat Penumbuk]]<ref>salah satu [[rasi]] [[bintang]] menurut bangsa Cina</ref>
| 杵二 / Chǔèr || [[China]] / [[Mandarin]] || bintang kedua pada [[rasi]] [[Daftar asterisme di Keranjang Tampi#Alat Penumbuk|Alat Penumbuk]]<ref>salah satu [[rasi]] [[bintang]] menurut bangsa Cina</ref>
|-
|Quae est in media arae (Almagest)|| [[Bahasa Latin|Latin]] || yang berada di tengah altar<ref>http://www.ac-ilsestante.it/ASTRONOMIA/costellazioni/costellazioni_finestra_manuale/costellazione_ara/stelle/D06_ALPHA_ARAE.html</ref>


|}
|}
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{{reflist}}
{{reflist}}


== Pranala luar ==
{{astronomi-stub}}
* [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%206510 HR 6510], entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., [[Centre de Données astronomiques de Strasbourg|CDS]] ID [http://vizier.u-strasbg.fr/viz-bin/Cat?V/50 V/50].
[[Kategori:Rasi bintang Ara]]
* [http://www.alcyone.de/cgi-bin/search.pl?object=HR6510 α Arae] {{Webarchive|url=https://web.archive.org/web/20160304113618/http://www.alcyone.de/cgi-bin/search.pl?object=HR6510 |date=2016-03-04 }} at Alycone Software's Star Data Pages.
* [http://aladin.u-strasbg.fr/AladinPreview?-c=V*+alf+Ara&ident=V*+alf+Ara&submit=Aladin+previewer Image of Alpha Arae] from [[Aladin]].


{{bintang-stub}}
[[ca:Choo]]

[[en:Alpha Arae]]
[[es:Alfa Arae]]
[[Kategori:Rasi bintang Ara]]
[[fr:Alpha Arae]]
[[ja:さいだん座アルファ星]]
[[sv:Alfa Arae]]
[[zh:天壇座α]]

Revisi terkini sejak 28 Januari 2021 13.31

α Arae

α Arae (Choo) in the constellation Ara.
Data pengamatan
Epos J2000.0      Ekuinoks J2000.0 (ICRS)
Rasi bintang Ara
Asensio rekta  17j 31m 50.4933d[1]
Deklinasi  −49° 52′ 34.121″[1]
Magnitudo tampak (V) 2.76 to 2.90[2]
Ciri-ciri
Kelas spektrum B3Ve
Indeks warna U−B −0.69[2]
Indeks warna B−V −0.17[2]
Indeks warna R−I −0.24[2]
Jenis variabel BE[3]
Astrometri
Kecepatan radial (Rv)0[1] km/s
Gerak diri (μ) RA: −31.27[1] mdb/thn
Dek.: −67.15[1] mdb/thn
Paralaks (π)13,46±0,95[1] mdb
Jarak240 ± 20 tc
(74 ± 5 pc)
Magnitudo mutlak (MV)−1.5[note 1]
Detail
Massa9.6 M
Radius4.8 R
Luminositas (bolometrik)5,800 L
Suhu18,000 K
Rotasi12 h[note 2]
Kecepatan rotasi (v sin i)375 km/s
Penamaan lain
Choo, Tchou, α Ara, Alpha Arae, Alpha Ara, HJ 4955A, 2MASS J17315049-4952341, AAVSO 1724-49, CCDM J17318-4953A, CD−49°11511, CPC 0 16300, CPD−49°10052, CSI-49 11511 21, EM* MWC 261, FK5 651, GC 23708, GCRV 10116, GSC 08350-02600, HD 158427, Hen 3-1417, HIP 85792, HR 6510, IDS 17241-4948 A, IRAS 17279-4950, JP11 2859, N30 3898, NSV 8999, PLX 3969.1, PPM 323069, ROT 2456, SAO 228069, TD1 20501, TYC 8350-2600-1, UBV 14909, UBV M 22215, uvby98 100158427 A, WDS 17318-4953A.[1]
Referensi basis data
SIMBADdata

Alpha Arae (Alpha Ara / α Arae / α Ara) merupakan bintang tercerah kedua di rasi Ara. Bintang ini memiliki jarak 242 tahun cahaya dari Bumi dan bermagnitudo 2.84.

Etimologi

[sunting | sunting sumber]

Bintang ini memiliki nama tradisional Tchou atau Choo, dari bahasa China 杵, atau Mandarin chǔ, yang berarti "alat penumbuk". Nama lain dari para astronom terdahulu adalah:

nama lain asal bahasa arti
杵二 / Chǔèr China / Mandarin bintang kedua pada rasi Alat Penumbuk[4]
Quae est in media arae (Almagest) Latin yang berada di tengah altar[5]

Referensi

[sunting | sunting sumber]
  1. ^ a b c d e f g V* alf Ara -- Eruptive variable Star, database entry, SIMBAD. Accessed on line November 26, 2008.
  2. ^ a b c d HR 6510, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 26, 2008.
  3. ^ alf Ara, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 26, 2008.
  4. ^ salah satu rasi bintang menurut bangsa Cina
  5. ^ http://www.ac-ilsestante.it/ASTRONOMIA/costellazioni/costellazioni_finestra_manuale/costellazione_ara/stelle/D06_ALPHA_ARAE.html

Pranala luar

[sunting | sunting sumber]


Kesalahan pengutipan: Ditemukan tag <ref> untuk kelompok bernama "note", tapi tidak ditemukan tag <references group="note"/> yang berkaitan