2 Pallas: Perbedaan antara revisi
Tampilan
Konten dihapus Konten ditambahkan
Wagino Bot (bicara | kontrib) k →top: minor cosmetic change |
Wagino Bot (bicara | kontrib) k →top: minor cosmetic change |
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Baris 15: | Baris 15: | ||
|adjectives=Palladian<ref>[[OED]]</ref> |
|adjectives=Palladian<ref>[[OED]]</ref> |
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|orbit_ref=[ftp://ftp.lowell.edu/pub/elgb/astorb.html]<ref name="jpldata">{{cite web |
|orbit_ref=[ftp://ftp.lowell.edu/pub/elgb/astorb.html]<ref name="jpldata">{{cite web |
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|title=JPL Small-Body Database Browser: 2 Pallas |
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|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2 |
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|accessdate=2009-09-12}}</ref> |
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|epoch=[[22 Agustus]] [[2008]] ([[Hari Julian]] 2454700,5) |
|epoch=[[22 Agustus]] [[2008]] ([[Hari Julian]] 2454700,5) |
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|semimajor=2,772 SA (414,737 Gm) |
|semimajor=2,772 SA (414,737 Gm) |
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Baris 25: | Baris 25: | ||
|period=4,62 [[Tahun Julian|a]] (1686,044 [[hari|hr]]) |
|period=4,62 [[Tahun Julian|a]] (1686,044 [[hari|hr]]) |
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|inclination=34,838[[Derajat (satuan sudut)|°]] ke [[Ekliptika]]<br>34,21° ke [[Bidang invariabel]]<ref name=meanplane>{{cite web |
|inclination=34,838[[Derajat (satuan sudut)|°]] ke [[Ekliptika]]<br>34,21° ke [[Bidang invariabel]]<ref name=meanplane>{{cite web |
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|date=2009-04-03 |
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|title=The MeanPlane (Invariable plane) of the Solar System passing through the barycenter |
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|url=http://home.surewest.net/kheider/astro/MeanPlane.gif |
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|accessdate=2009-04-10|archiveurl=http://www.webcitation.org/5glwILykY|archivedate=2009-05-14|deadurl=no}} (produced with [http://chemistry.unina.it/~alvitagl/solex/ Solex 10] written by Aldo Vitagliano; see also [[Invariable plane]]). Retrieved 2009-04-25.</ref> |
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|asc_node=173,134° |
|asc_node=173,134° |
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|arg_peri=310,274° |
|arg_peri=310,274° |
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Baris 34: | Baris 34: | ||
|avg_speed=17,65 km/[[detik|dtk]] |
|avg_speed=17,65 km/[[detik|dtk]] |
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|p_orbit_ref = <ref name=Pallas-POE>{{cite web |
|p_orbit_ref = <ref name=Pallas-POE>{{cite web |
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|title=AstDyS-2 Pallas Synthetic Proper Orbital Elements |
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|publisher=Department of Mathematics, University of Pisa, Italy |
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|url=http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.6&n=2 |
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|accessdate=2011-10-01}}</ref> |
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|p_semimajor = 2,7709176 |
|p_semimajor = 2,7709176 |
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|p_eccentricity = 0,2812580 |
|p_eccentricity = 0,2812580 |
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Baris 46: | Baris 46: | ||
|dimensions=582×556×500±18 km<ref name="Hubble"> |
|dimensions=582×556×500±18 km<ref name="Hubble"> |
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{{cite journal |
{{cite journal |
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|author=Schmidt, B. E., ''et al.'' |
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|title=Hubble takes a look at Pallas: Shape, size, and surface |
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|journal=39th Lunar and Planetary Science Conference (Lunar and Planetary Science XXXIX). Held March 10–14, 2008, in League City, Texas. |
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|year=2008|volume=1391|page=2502 |
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|url=http://www.lpi.usra.edu/meetings/lpsc2008/pdf/2502.pdf |
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|format=PDF|accessdate=2008-08-24 |
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}}</ref><br>544 km ([[Rata-rata geometrik|rata-rata]])<ref name=jpldata/> |
}}</ref><br>544 km ([[Rata-rata geometrik|rata-rata]])<ref name=jpldata/> |
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|mass=(2,11±0,26){{e|20}} kg<ref name="Baer2007"> |
|mass=(2,11±0,26){{e|20}} kg<ref name="Baer2007"> |
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{{cite journal |
{{cite journal |
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|last=Baer|first=James |
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|coauthors=Steven R. Chesley |
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|title=Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris |
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|journal=Celestial Mechanics and Dynamical Astronomy |
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|volume=100|issue=2008|pages=27–42 |
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|publisher=Springer Science+Business Media B.V. 2007 |
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|url=http://www.springerlink.com/content/h747307j43863228/fulltext.pdf |
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|format=PDF |
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|doi=10.1007/s10569-007-9103-8 |
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|accessdate=2008-11-11 |
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|year=2008 |
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|bibcode = 2008CeMDA.100...27B }}</ref> |
|bibcode = 2008CeMDA.100...27B }}</ref> |
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|density=~2,8 g/[[centi-|c]]m³<ref name="Hubble"/> |
|density=~2,8 g/[[centi-|c]]m³<ref name="Hubble"/> |
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Baris 71: | Baris 71: | ||
|escape_velocity=~0,32 km/s |
|escape_velocity=~0,32 km/s |
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|axial_tilt=sekitar 78 ± 13°<ref name="Torppa2003">{{cite journal |
|axial_tilt=sekitar 78 ± 13°<ref name="Torppa2003">{{cite journal |
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|author=Torppa, J.; ''et al.'' |
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|title=Shapes and rotational properties of thirty asteroids from photometric data |
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|journal=Icarus|year=2003 |
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|volume=164|issue=2|pages=346–383 |
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|bibcode=2003Icar..164..346T |
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|doi=10.1016/S0019-1035(03)00146-5 }}</ref> |
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|rotation=0,325 55 hari<br>(7,8132 jam)<ref name="lc"> |
|rotation=0,325 55 hari<br>(7,8132 jam)<ref name="lc"> |
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{{cite web |
{{cite web |
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|last= Harris|first= A. W.|coauthors= Warner, B. D.; Pravec, P.; Eds. |
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|title= Asteroid Lightcurve Derived Data. EAR-A-5-DDR-Derived-Lightcurve-V8.0. |
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|publisher= [[Planetary Data System|NASA Planetary Data System]]|year= 2006 |
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|url= http://www.psi.edu/pds/resource/lc.html |
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|accessdate= 2007-03-15|archiveurl = http://web.archive.org/web/20070128183706/http://www.psi.edu/pds/resource/lc.html <!-- Bot retrieved archive -->|archivedate = 2007-01-28}}</ref> |
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|spectral_type=[[Asteroid tipe B]]<ref name="tax"> |
|spectral_type=[[Asteroid tipe B]]<ref name="tax"> |
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{{cite web |
{{cite web |
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|last= Neese|first= C.|coauthors= Ed. |
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|title= Asteroid Taxonomy. EAR-A-5-DDR-Taxonomy-V5.0. |
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|publisher= [[Planetary Data System|NASA Planetary Data System]] |
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|year= 2005 |
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|url= http://www.psi.edu/pds/resource/taxonomy.html |
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|accessdate= 2007-03-15|archiveurl = http://web.archive.org/web/20070310220044/http://www.psi.edu/pds/resource/taxonomy.html <!-- Bot retrieved archive -->|archivedate = 2007-03-10}}</ref> |
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|magnitude = 6,4<ref name="Pasachoff1983"> |
|magnitude = 6,4<ref name="Pasachoff1983"> |
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{{cite book |
{{cite book |
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|author=Menzel, Donald H.; Pasachoff, Jay M. |
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|year=1983 |
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|title=A Field Guide to the Stars and Planets |
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|edition=2nd |
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|publisher=Houghton Mifflin |
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|page=391 |
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|location=Boston, MA |
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|isbn=0-395-34835-8 }}</ref> hingga 10,6 |
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|abs_magnitude=4,13<ref name="iras"> |
|abs_magnitude=4,13<ref name="iras"> |
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{{cite web |
{{cite web |
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|last= Tedesco|first= E. F.|coauthors= Noah, P. V.; Noah, M.; Price, S. D. |
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|title= IRAS Minor Planet Survey. IRAS-A-FPA-3-RDR-IMPS-V6.0. |
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|publisher= [[Planetary Data System|NASA Planetary Data System]]|year= 2004 |
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|url= http://www.psi.edu/pds/resource/imps.html |
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|accessdate= 2007-03-15|archiveurl = http://web.archive.org/web/20070311123634/http://www.psi.edu/pds/resource/imps.html <!-- Bot retrieved archive -->|archivedate = 2007-03-11}}</ref> |
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|albedo=0,159 ([[Albedo geometrik|geometrik]])<ref name="iras"/> |
|albedo=0,159 ([[Albedo geometrik|geometrik]])<ref name="iras"/> |
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|angular_size = 0,59"<ref name=opp2014>Calculated with [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2 JPL Horizons] for 2014-Feb-24</ref> hingga 0,17" |
|angular_size = 0,59"<ref name=opp2014>Calculated with [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2 JPL Horizons] for 2014-Feb-24</ref> hingga 0,17" |
Revisi per 15 Maret 2016 18.43
![]() Citra ultraviolet dari Pallas yang diambil dari Teleskop Hubble. | |
Penemuan | |
---|---|
Ditemukan oleh | Heinrich Wilhelm Olbers |
Tanggal penemuan | 28 Maret 1802 |
Penamaan | |
Pelafalan | [ˈpæləs] [note 1] |
Asal nama | Pallas Athena |
Keluarga Pallas | |
Kata sifat bahasa Inggris | Palladian[1] |
Ciri-ciri orbit[1][3] | |
Epos 22 Agustus 2008 (Hari Julian 2454700,5) | |
Aphelion | 3,412 SA (510,468 Gm) |
Perihelion | 2,132 SA (319,005 Gm) |
2,772 SA (414,737 Gm) | |
Eksentrisitas | 0,231 |
4,62 a (1686,044 hr) | |
Kecepatan orbit rata-rata | 17,65 km/dtk |
306,605° | |
Inklinasi | 34,838° ke Ekliptika 34,21° ke Bidang invariabel[2] |
173,134° | |
310,274° | |
Elemen orbit tetap[4] | |
Sumbu semimayor tetap | 2,7709176 AU |
Eksentrisitas tetap | 0,2812580 |
Inklinasi tetap | 33,1988686° |
Pergerakan rata-rata tetap | 78.041654 ° / tahun |
Periode orbit tetap | 4.61292 tahun (1684.869 hari) |
Presesi perihelion | -1,335344 arcsec / tahun |
Presesi node menaik | −46,393342 arcsec / tahun |
Ciri-ciri fisik | |
Dimensi | 582×556×500±18 km[5] 544 km (rata-rata)[3] |
Massa | (2,11±0,26)×1020 kg[6] |
Massa jenis rata-rata | ~2,8 g/cm³[5] |
~0,18 m/s² | |
~0,32 km/s | |
0,325 55 hari (7,8132 jam)[7] | |
sekitar 78 ± 13°[8] | |
Albedo | 0,159 (geometrik)[9] |
Suhu | ~164 K maks: ~265 K (-8 °C) |
Pola spektrum | Asteroid tipe B[10] |
6,4[11] hingga 10,6 | |
4,13[9] | |
0,59"[12] hingga 0,17" |
2 Pallas (pengucapan bahasa Inggris: [ˈpæləs], bahasa Yunani: Παλλάς) merupakan asteroid besar yang terletak di sabuk asteroid sistem tata surya dan merupakan asteroid ke-2 yang ditemukan. Ditemukan dan dinamai oleh astronom Heinrich Wilhelm Matthaus Olbers pada tanggal 28 Maret 1802. 2 Pallas merupakan salah satu dari 4 asteroid besar (1 Ceres, 4 Vesta, 10 Hygiea, dan 2 Pallas). Asteroid besar tersebut tak termasuk 704 Interamnia. Pallas berdiameter 530 km,[3] sedikit lebih besar dari 4 Vesta.
Referensi
- ^ OED
- ^ "The MeanPlane (Invariable plane) of the Solar System passing through the barycenter". 2009-04-03. Diarsipkan dari versi asli tanggal 2009-05-14. Diakses tanggal 2009-04-10. (produced with Solex 10 written by Aldo Vitagliano; see also Invariable plane). Retrieved 2009-04-25.
- ^ a b c "JPL Small-Body Database Browser: 2 Pallas". Diakses tanggal 2009-09-12.
- ^ "AstDyS-2 Pallas Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Diakses tanggal 2011-10-01.
- ^ a b Schmidt, B. E.; et al. (2008). "Hubble takes a look at Pallas: Shape, size, and surface" (PDF). 39th Lunar and Planetary Science Conference (Lunar and Planetary Science XXXIX). Held March 10–14, 2008, in League City, Texas. 1391: 2502. Diakses tanggal 2008-08-24.
- ^ Baer, James (2008). "Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris" (PDF). Celestial Mechanics and Dynamical Astronomy. Springer Science+Business Media B.V. 2007. 100 (2008): 27–42. Bibcode:2008CeMDA.100...27B. doi:10.1007/s10569-007-9103-8. Diakses tanggal 2008-11-11.
- ^ Harris, A. W. (2006). "Asteroid Lightcurve Derived Data. EAR-A-5-DDR-Derived-Lightcurve-V8.0". NASA Planetary Data System. Diarsipkan dari versi asli tanggal 2007-01-28. Diakses tanggal 2007-03-15.
- ^ Torppa, J.; et al. (2003). "Shapes and rotational properties of thirty asteroids from photometric data". Icarus. 164 (2): 346–383. Bibcode:2003Icar..164..346T. doi:10.1016/S0019-1035(03)00146-5.
- ^ a b Tedesco, E. F. (2004). "IRAS Minor Planet Survey. IRAS-A-FPA-3-RDR-IMPS-V6.0". NASA Planetary Data System. Diarsipkan dari versi asli tanggal 2007-03-11. Diakses tanggal 2007-03-15.
- ^ Neese, C. (2005). "Asteroid Taxonomy. EAR-A-5-DDR-Taxonomy-V5.0". NASA Planetary Data System. Diarsipkan dari versi asli tanggal 2007-03-10. Diakses tanggal 2007-03-15.
- ^ Menzel, Donald H.; Pasachoff, Jay M. (1983). A Field Guide to the Stars and Planets (edisi ke-2nd). Boston, MA: Houghton Mifflin. hlm. 391. ISBN 0-395-34835-8.
- ^ Calculated with JPL Horizons for 2014-Feb-24
Catatan kaki
- ^ In US dictionary transcription, US dict: păl′·əs. Or as bahasa Yunani: Παλλάς.
Pranala luar
- "2 Pallas". JPL Small-Body Database Browser. Diakses tanggal 2007-03-29.
- Tedesco, Edward F.; Noah, Paul V.; Noah, Meg; Price, Stephan D. (2002). "The Supplemental IRAS Minor Planet Survey". The Astronomical Journal. 123 (2): 1056–1085. Diakses tanggal 2007-03-15.
- Hilton, James L. (1 April 1999). "U.S. Naval Observatory Ephemerides of the Largest Asteroids". U.S. Naval Observatory. Diakses tanggal 2007-03-14.
- Dunn, Tony (2006). "Ceres, Pallas Vesta and Hygeia". GravitySimulator.com. Diakses tanggal 2007-03-15.
- Yeomans, Donald K. "Horizons system". NASA JPL. Diakses tanggal 2007-03-20. — Horizons can be used to obtain a current ephemeris.
Navigasi planet minor
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Didahului oleh: 1 Ceres |
2 Pallas | Diikuti oleh: 3 Juno |