50000 Quaoar

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50000 Quaoar
Quaoar PRC2002-17e.jpg
Gambar Quaoar yang diambil dari Teleskop Luar Angkasa Hubble pada tahun 2002
Penemuan [1]
Ditemukan olehC. Trujillo
M. E. Brown
Situs penemuanPalomar Obs.
Tanggal penemuan6 Juni 2002
Penamaan
Penamaan MPC(50000) Quaoar
Pelafalan/ˈkwɑːwɑːr/[a]
Asal nama
Quaoar[2]
(deity of the Tongva people)
2002 LM60
Objek Trans-Neptunus[3]
Karakteristik orbit[3]
Epos 27 April 2019 (Hari Julian 2458600.5)
Parameter ketidakpastian 3
Rentang observasi64.044 hari (23,376 hari)
Tanggal precovery terawal
25 Mei 1954
Aphelion43.6916 AU
Perihelion41.9635 AU
43.6916 AU
Eksentrisitas0.0396
288.81 tahun (105,416 h)
300.7086°
0° 0m 12.287s / hari
Inklinasi7.9881°
188.8372°
146.4064°
satelit yang diketahui1 (Weywot; D: 81±11 km)[4]
Karakteristik fisik
Diameter rata-rata
1110±5 km [5]
1074±38 km[6]
Radius rata-rata
555±2,5 km [5]
Kepepatan0,0897±0,006[5]
Massa(1,4±0,1)×1021 kg[6][7]
0.12 Massa Eris [8]
Massa jenis rata-rata
1,99±0,46 g/cm3[5]
2,18+0,43
−0,36
 g/cm3
[6]
≈ 0.3 m/s2
≈ 1.83 m/s
17,6788 j[9]
0,109±0,007[5]
(cukup merah)
B–V =0,94±0,01[10]
V−R = 0,64±0,01[10]
19.3[11]
2,82±0,06[5]
2.4[3]
Quaoar beserta dengan Eris, Pluto, Makemake, Haumea, Sedna, Orcus, Varuna, dan Bumi.

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.

Catatan[sunting | sunting sumber]

  1. ^ Brown's website[12] gives a three-syllable pronunciation, /ˈkwɑːwɑːr/, 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.[13]

Referensi[sunting | sunting sumber]

  1. ^ "50000 Quaoar (2002 LM60)". Minor Planet Center. Diakses tanggal 30 November 2017. 
  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. 
  3. ^ a b c "JPL Small-Body Database Browser: 50000 Quaoar (2002 LM60)" (2018-05-25 last obs.). Jet Propulsion Laboratory. Diakses tanggal 27 February 2018. 
  4. ^ Green, Daniel W. E. (22 February 2007). "Satellites of 2003 AZ_84, (50000), (55637), and (90482)". International Astronomical Union Circular. Central Bureau for Astronomical Telegrams. hlm. 1. Bibcode:2007IAUC.8812....1B. Diarsipkan dari versi asli tanggal 19 July 2011. 
  5. ^ a b c d e f 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. 
  6. ^ a b c 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:1305.0449v2alt=Dapat diakses gratis. Bibcode:2013A&A...555A..15F. doi:10.1051/0004-6361/201321329. Diakses tanggal 27 February 2018. 
  7. ^ 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:1211.1016alt=Dapat diakses gratis. Bibcode:2013Icar..222..357F. doi:10.1016/j.icarus.2012.11.004. 
  8. ^ Fraser, Wesley C.; Brown, Michael E. (May 2010). "Quaoar: A Rock in the Kuiper Belt". The Astrophysical Journal. 714 (2): 1547–1550. arXiv:1003.5911alt=Dapat diakses gratis. Bibcode:2010ApJ...714.1547F. doi:10.1088/0004-637X/714/2/1547. 
  9. ^ "LCDB Data for (50000) Quaoar". Asteroid Lightcurve Database (LCDB). Diakses tanggal 30 November 2017. 
  10. ^ a b Tegler, Stephen C. (1 February 2007). "Kuiper Belt Object Magnitudes and Surface Colors". Diarsipkan dari versi asli tanggal 2006-09-01. Diakses tanggal 27 February 2018. 
  11. ^ "AstDys (50000) Quaoar Ephemerides". Department of Mathematics, University of Pisa, Italy. Diakses tanggal 2009-03-16. 
  12. ^ Frequently Asked Questions About Quaoar
  13. ^ 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″