50000 Quaoar

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50000 Quaoar
Quaoar PRC2002-17e.jpg
Sum o 16 Hubble exposurs registered
on Quaoar in 2002
Discovery[1]
Discovered bi Chad Trujillo, Michael Brown
Discovery date 2002 Jun 05 10:48:08 PDT on an eemage taken 2002 Juin 04 05:41:40 UT
Designations
Named after
Quaoar
2002 LM60
Cubewano[2][3]
Orbital chairactereestics[5][6]
Epoch 13 Januar 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 22578 days (61.82 yr)
Aphelion 44.878 AU (6.7137 Tm)
Perihelion 41.868 AU (6.2634 Tm)
43.373 AU (6.4885 Tm)
Eccentricity 0.034704
285.65 yr (104334 d)
4.52 km/s
287.542°
0° 0m 12.422s / day
Inclination 7.9870°
188.772°
155.246°
Kent satellites Weywot[4]
(81±11 km in diameter)
Yird MOID 40.8601 AU (6.11258 Tm)
Jupiter MOID 36.8936 AU (5.51920 Tm)
Jupiter Tisserand parameter 5.835
Pheesical chairactereestics
Dimensions 1110±5 km (occultation)[7]
1074±38 km[8]
Mass (1.4±0.1)×1021 kg[8][9]
0.12 Eris masses[10]
Mean density
1.99±0.46 g/cm3[7]
2.18+0.43
−0.36
 g/cm3
[8]
Equatorial surface gravity
0.276–0.376 m/s2
Equatorial escape velocity
0.523–0.712 km/s
17.6788 h (0.73662 d)
17.6788 h
0.109±0.007[7]
Temperatur ≈ 43 K
(moderately red)
B−V=0.94, V−R=0.64[11]
19.3[12]
2.82±0.06,[7] 2.4[5]

50000 Quaoar ("Kwawar") is a Kuiper belt object roughly hauf the size o Pluto, wi a diameter o 1110±5 km. It is lairge enough an massive enough that it is probably a dwarf planet. Its orbit in the Kuiper belt isna in resonance wi Neptune, which means it is a clessical Kuiper belt object. Quaoar haes ane kent muin, Weywot.

References[eedit | eedit soorce]

  1. Frequently Asked Questions About Quaoar
  2. Buie, Marc W. (2006-05-17). "Orbit Fit and Astrometric record for 50000". SwRI (Space Science Department). Retrieved 2008-09-19. 
  3. Marsden, Brian G. (2008-07-17). "MPEC 2008-O05 : Distant Minor Planets (2008 Aug. 2.0 TT)". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 2008-10-01. 
  4. Daniel W. E. Green (2007-02-22). "IAUC 8812: Sats of 2003 AZ84, (50000), (55637), (90482)". International Astronomical Union Circular. Retrieved 2011-07-05. 
  5. 5.0 5.1 JPL, NASA. "JPL Small-Body Database Browser". National Aeronautics and Space Administration. Jet Propulsion Laboratory. Retrieved 12 Aprile 2016. 2010-06-16 last obs 
  6. "Asteroid Data Services by Lowell Observatory". Lowell Observatory, Ted Bowell and Bruce Koehn. 2 Mey 2008. Retrieved 2015-01-30. 
  7. 7.0 7.1 7.2 7.3 Braga-Ribas, F.; Sicardy, B.; Ortiz, J.L.; et al. (2013). "The Size, Shape, Albedo, Density, and Atmospheric Limit of Transneptunian Object (50000) Quaoar from Multi-chord Stellar Occultations". The Astrophysical Journal. 773: 26. Bibcode:2013ApJ...773...26B. doi:10.1088/0004-637X/773/1/26. 
  8. 8.0 8.1 8.2 Fornasier, S.; Lellouch, E.; Müller, P., T.; et al. (2013). "TNOs are Cool: A survey of the trans-Neptunian region. VIII. Combined Herschel PACS and SPIRE observations of 9 bright targets at 70–500 µm". Astronomy & Astrophysics. 555: A92. arXiv:1305.0449v2Freely accessible. Bibcode:2013A&A...555A..15F. doi:10.1051/0004-6361/201321329. 
  9. Wesley C. Fraser; Konstantin Batygin; Michael E. Brown; Antonin Bouchez (2013). "The mass, orbit, and tidal evolution of the Quaoar–Weywot system". Icarus. 222: 357–363. doi:10.1016/j.icarus.2012.11.004. 
  10. Brown, Michael E.; Fraser, Wesley C. (2010). "Quaoar: A Rock in the Kuiper belt". The Astrophysical Journal. 714 (2): 1547. arXiv:1003.5911Freely accessible. Bibcode:2010ApJ...714.1547F. doi:10.1088/0004-637X/714/2/1547. 
  11. Tegler, Stephen C. (2007-02-01). "Kuiper Belt Object Magnitudes and Surface Colors". Archived frae the oreeginal on November 16, 2007. Retrieved 2015-07-22. 
  12. "AstDys (50000) Quaoar Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-03-16.