50000 Quaoar

50000 Quaoar
	Sum of 16 Hubble exposures registered on Quaoar.
Discovery
Discovered by	Chad Trujillo, Michael Brown
Discovery date	2002 Jun 05 10:48:08 PDT on an image taken 2002 June 04 05:41:40 UT
Designations
Alternative designations	2002 LM60
Minor planet category	Cubewano
Orbital characteristics
	Epoch May 18, 2008 (JD 2 454 600.5)
Aphelion	6.716 275 Tm (45.286 AU)
Perihelion	6.270 316 Tm (41.928 AU)
Semi-major axis	6.493 296 Tm (43.607 AU)
Eccentricity	0.038 4
Orbital period	105 181.6 d (287.97 a)
Average orbital speed	4.52 km/s
Mean anomaly	284.861°
Inclination	7.988°
Longitude of ascending node	188.893°
Argument of perihelion	148.508°
Physical characteristics
Dimensions	1260 ± 190 km (direct) ; 844+207; −190 km (thermal)
Mass	(1.0–2.6)×1021 kg
Mean density	2.0? g/cm³
Equatorial surface gravity	0.276–0.376 m/s²
Equatorial escape velocity	0.523–0.712 km/s
Geometric albedo	0.088 +0.021; −0.012 ; 0.198 6 +0.13; −0.07
Temperature	~43 K
Spectral type	(moderately red) B-V=0.94, V-R=0.65
Absolute magnitude (H)	2.6

50000 Quaoar is a Trans-Neptunian object and is also a dwarf planet. It was discovered on June 4, 2002 by Chad Trujillo and Michael Brown at the California Institute of Technology.

References[change | change source]

↑ "Frequently Asked Questions About Quaoar". Archived from the original on 2010-01-17. Retrieved 2009-02-19.CS1 maint: bot: original URL status unknown (link)
↑ Buie, Marc W. (2006-05-17). "Orbit Fit and Astrometric record for 50000". SwRI (Space Science Department). Retrieved 2008-09-19.
↑ 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. Archived from the original on 2012-04-09. Retrieved 2008-10-01.
↑ "Asteroid Data Services by Lowell Observatory". Archived from the original on 2007-06-21. Retrieved 2020-09-14.CS1 maint: bot: original URL status unknown (link)
↑ ^5.0 ^5.1 Brown, Michael E. and Chadwick A. Trujillo (2004). "Direct Measurement of the Size of the Large Kuiper Belt Object (50000) Quaoar". The Astronomical Journal. 127 (7018): 2413–2417. doi:10.1086/382513. Reprint on Brown's site (pdf)
↑ ^6.0 ^6.1 Stansberry J., Grundy W., Brown M, Cruikshank D., Spencer J., Trilling D., Margot J-L Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope To Appear in: Kuiper Belt (M.A. Barucci et al., Eds.) U. Arizona Press, 2007 Preprint

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