50000 Quaoar adalah objek trans Neptunus biner dan kandidat planet kerdil yang mengorbit Matahari di sabuk Kuiper Ia dit

50000 Quaoar adalah objek trans-Neptunus biner dan kandidat planet kerdil yang mengorbit Matahari di sabuk Kuiper. Ia ditemukan pada tanggal 4 Juni 2002 oleh astronom Chad Trujillo dan Michael Brown di California Institute of Technology, dari gambar diperoleh Teleskop Oschin Samuel di Observatorium Palomar.

Quaoar
Penemuan
Gambar Quaoar dan Weywot yang diambil dari Teleskop Luar Angkasa Hubble pada tahun 2006
Ditemukan oleh	C. Trujillo M. E. Brown
Situs penemuan	Palomar Obs.
Tanggal penemuan	6 Juni 2002
Penamaan
Penamaan MPC	(50000) Quaoar
Pelafalan	/ˈkwɑːwɑːr/
Asal nama	Quaoar (deity of the Tongva people)
Penamaan alternatif	2002 LM₆₀
Kategori planet minor	Objek Trans-Neptunus
Ciri-ciri orbit
Epos 27 April 2019 (Hari Julian 2458600.5)
Parameter ketidakpastian 3
Rentang pengamatan	64.044 hari (23,376 hari)
Tanggal precovery terawal	25 Mei 1954
Aphelion	43.6916 AU
Perihelion	41.9635 AU
Sumbu semimayor	43.6916 AU
Eksentrisitas	0.0396
Periode orbit	288.81 tahun (105,416 h)
Anomali rata-rata	300.7086°
Pergerakan rata-rata	0° 0^m 12.287^s / hari
Inklinasi	7.9881°
Bujur node menaik	188.8372°
Argumen perihelion	146.4064°
satelit yang diketahui	1 (Weywot; D: 81±11 km)
Ciri-ciri fisik
Diameter rata-rata	1110±5 km 1074±38 km
Jari-jari rata-rata	555±2,5 km
Kepepatan	0,0897±0,006
Massa	(1,4±0,1)×10²¹ kg 0.12 Massa Eris
Massa jenis rata-rata	1,99±0,46 g/cm³ 2,18+0,43 −0,36 g/cm³
Gravitasi permukaaan ekuator	≈ 0.3 m/s²
Kecepatan lepas ekuator	≈ 1.83 m/s
Periode rotasi	17,6788 j
Albedo geometris	0,109±0,007
Pola spektrum	(cukup merah) B–V =0,94±0,01 V−R = 0,64±0,01
Magnitudo semu	19.3
Magnitudo mutlak (H)	2,82±0,06 2.4

Quaoar beserta dengan Eris, Pluto, Makemake, Haumea, Sedna, Orcus, Varuna, dan Bumi.

Quaoar dan Weywot

Catatan Sunting

Brown's website gives a three-syllable pronunciation, /ˈkwɑːoʊwɑːr/, as an approximation of the Tongva pronunciation Templat:IPA-azc. However, his students pronounce it with two syllables, /ˈkwɑːwɑːr/, reflecting the usual English spelling and pronunciation of the deity, Kwawar.

Referensi Sunting

"50000 Quaoar (2002 LM60)". Minor Planet Center. Diakses tanggal 30 November 2017.
Schmadel, Lutz D. (2007). "(50000) Quaoar". Dictionary of Minor Planet Names – (50000) Quaoar. Springer Berlin Heidelberg. hlm. 895. doi:10.1007/978-3-540-29925-7_10041. ISBN 978-3-540-00238-3.
^ "JPL Small-Body Database Browser: 50000 Quaoar (2002 LM60)" (2018-05-25 last obs.). Jet Propulsion Laboratory. Diakses tanggal 27 February 2018.
Green, Daniel W. E. (22 February 2007). . International Astronomical Union Circular. Central Bureau for Astronomical Telegrams. hlm. 1. Bibcode:2007IAUC.8812....1B. Diarsipkan dari versi asli tanggal 19 July 2011.
^ Braga-Ribas, F.; Sicardy, B.; Ortiz, J. L.; Lellouch, E.; Tancredi, G.; Lecacheux, J.; et al. (August 2013). "The Size, Shape, Albedo, Density, and Atmospheric Limit of Transneptunian Object (50000) Quaoar from Multi-chord Stellar Occultations". The Astrophysical Journal. 773 (1): 13. Bibcode:2013ApJ...773...26B. doi:10.1088/0004-637X/773/1/26. Diakses tanggal 27 February 2018.
^ Fornasier, S.; Lellouch, E.; Müller, T.; Santos-Sanz, P.; Panuzzo, P.; Kiss, C.; et al. (July 2013). "TNOs are Cool: A survey of the trans-Neptunian region. VIII. Combined Herschel PACS and SPIRE observations of nine bright targets at 70-500 µm". Astronomy and Astrophysics. 555: 22. arXiv:1305.0449v2 . Bibcode:2013A&A...555A..15F. doi:10.1051/0004-6361/201321329. Diakses tanggal 27 February 2018.
Fraser, Wesley C.; Batygin, Konstantin; Brown, Michael E.; Bouchez, Antonin (January 2013). "The mass, orbit, and tidal evolution of the Quaoar-Weywot system". Icarus. 222 (1): 357–363. arXiv:1211.1016 . Bibcode:2013Icar..222..357F. doi:10.1016/j.icarus.2012.11.004.
Fraser, Wesley C.; Brown, Michael E. (May 2010). "Quaoar: A Rock in the Kuiper Belt". The Astrophysical Journal. 714 (2): 1547–1550. arXiv:1003.5911 . Bibcode:2010ApJ...714.1547F. doi:10.1088/0004-637X/714/2/1547.
. Asteroid Lightcurve Database (LCDB). Diarsipkan dari versi asli tanggal 2019-01-11. Diakses tanggal 30 November 2017.
^ Tegler, Stephen C. (1 February 2007). . Diarsipkan dari versi asli tanggal 2006-09-01. Diakses tanggal 27 February 2018.
"AstDys (50000) Quaoar Ephemerides". Department of Mathematics, University of Pisa, Italy. Diakses tanggal 2009-03-16.
E. L. Schaller, M. E. Brown, "Detection of Additional Members of the Haumea Collisional Family via Infrared Spectroscopy". AAS DPS conference, 13 Oct. 2008; also podcast: Dwarf Planet Haumea (Darin Ragozzine) at 3′18″

Artikel bertopik Centaur (planet minor) atau Objek trans-Neptunus ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya.

[dict-def-4] Brown's website gives a three-syllable pronunciation, /ˈkwɑːoʊwɑːr/, as an approximation of the Tongva pronunciation Templat:IPA-azc. However, his students pronounce it with two syllables, /ˈkwɑːwɑːr/, reflecting the usual English spelling and pronunciation of the deity, Kwawar.

[MPC-object-1] "50000 Quaoar (2002 LM60)". Minor Planet Center. Diakses tanggal 30 November 2017.

[springer-2] Schmadel, Lutz D. (2007). "(50000) Quaoar". Dictionary of Minor Planet Names – (50000) Quaoar. Springer Berlin Heidelberg. hlm. 895. doi:10.1007/978-3-540-29925-7_10041. ISBN 978-3-540-00238-3.

[jpldata-3] "JPL Small-Body Database Browser: 50000 Quaoar (2002 LM60)" (2018-05-25 last obs.). Jet Propulsion Laboratory. Diakses tanggal 27 February 2018.

[IAUC-5] Green, Daniel W. E. (22 February 2007). . International Astronomical Union Circular. Central Bureau for Astronomical Telegrams. hlm. 1. Bibcode:2007IAUC.8812....1B. Diarsipkan dari versi asli tanggal 19 July 2011.

[Braga-Ribas-2013-6] Braga-Ribas, F.; Sicardy, B.; Ortiz, J. L.; Lellouch, E.; Tancredi, G.; Lecacheux, J.; et al. (August 2013). "The Size, Shape, Albedo, Density, and Atmospheric Limit of Transneptunian Object (50000) Quaoar from Multi-chord Stellar Occultations". The Astrophysical Journal. 773 (1): 13. Bibcode:2013ApJ...773...26B. doi:10.1088/0004-637X/773/1/26. Diakses tanggal 27 February 2018.

[Fornasier-2013-7] Fornasier, S.; Lellouch, E.; Müller, T.; Santos-Sanz, P.; Panuzzo, P.; Kiss, C.; et al. (July 2013). "TNOs are Cool: A survey of the trans-Neptunian region. VIII. Combined Herschel PACS and SPIRE observations of nine bright targets at 70-500 µm". Astronomy and Astrophysics. 555: 22. arXiv:1305.0449v2 . Bibcode:2013A&A...555A..15F. doi:10.1051/0004-6361/201321329. Diakses tanggal 27 February 2018.

[Fraser-2013-8] Fraser, Wesley C.; Batygin, Konstantin; Brown, Michael E.; Bouchez, Antonin (January 2013). "The mass, orbit, and tidal evolution of the Quaoar-Weywot system". Icarus. 222 (1): 357–363. arXiv:1211.1016 . Bibcode:2013Icar..222..357F. doi:10.1016/j.icarus.2012.11.004.

[Fraser-2010-9] Fraser, Wesley C.; Brown, Michael E. (May 2010). "Quaoar: A Rock in the Kuiper Belt". The Astrophysical Journal. 714 (2): 1547–1550. arXiv:1003.5911 . Bibcode:2010ApJ...714.1547F. doi:10.1088/0004-637X/714/2/1547.

[lcdb-10] . Asteroid Lightcurve Database (LCDB). Diarsipkan dari versi asli tanggal 2019-01-11. Diakses tanggal 30 November 2017.

[Tegler-2007-11] Tegler, Stephen C. (1 February 2007). . Diarsipkan dari versi asli tanggal 2006-09-01. Diakses tanggal 27 February 2018.

[AstDys-12] "AstDys (50000) Quaoar Ephemerides". Department of Mathematics, University of Pisa, Italy. Diakses tanggal 2009-03-16.

[14] E. L. Schaller, M. E. Brown, "Detection of Additional Members of the Haumea Collisional Family via Infrared Spectroscopy". AAS DPS conference, 13 Oct. 2008; also podcast: Dwarf Planet Haumea (Darin Ragozzine) at 3′18″