(78799) 2002 XW93

(78799) 2002 XW93
Discovery
Discovered byPalomar Obs.
Discovery sitePalomar Obs.
Discovery date10 December 2002
Designations
(78799) 2002 XW93
2002 XW93
TNO · centaur
other TNO · distant
Orbital characteristics
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 4
Observation arc18.76 yr (6,852 d)
Earliest precovery date17 December 1989
Aphelion46.812 AU
Perihelion27.909 AU
37.360 AU
Eccentricity0.2530
228.36 yr (83,410 d)
145.37°
0° 0m 15.48s / day
Inclination14.383°
46.928°
247.18°
Physical characteristics
Mean diameter
565+71
−73
 km

584 km
0.038
5.5

(78799) 2002 XW93, provisional designation 2002 XW93, is a trans-Neptunian object and centaur from the outer Solar System, approximately 500–600 kilometers (300–400 mi) in diameter. It was discovered on 10 December 2002, by astronomers at the Palomar Observatory in California.

Orbit and physical characteristics

2002 XW93 orbits the Sun at a distance of 27.9–46.8 AU once every 228 years and 4 months (83,410 days; semi-major axis of 37.36 AU). Its orbit has an eccentricity of 0.25 and an inclination of 14° with respect to the ecliptic. The body's observation arc begins with a precovery published by the Digitized Sky Survey and taken Palomar in December 1989, or 13 years prior to its official discovery observation.

As of 2016, after a total of 29 observations, its orbital uncertainty parameter is at 3. Its last observation was made by the Hubble Space Telescope in September 2008. On 10 August 1926, it most recently reached perihelion, when it was nearest to the Sun. It is a near 5:7 resonant trans-Neptunian object.[citation needed]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 15 April 2004. As of 2018, it has not been named.


This page was last updated at 2022-01-09 02:09 UTC. Update now. View original page.

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