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Orcus
Designation
2004 DWB
Discoverer(s)
M.Brown, C. Trujillo, D. Rabonowitz
Discovery Date
17 February 2004
Name Origins
Gaulish God of the Underworld
Category
Plutino
Eccentricity
0.218
Semi-major axis ( AU )
5903.997 GM (39.466 AU)
Periphelion
4616.704 GM (30.861 AU)
Aphelion
7191.291 GM (48.071 AU)
Orbit Period ( days )
90558.570 d (247.94 a)
Mean Orbital Speed
4.68 Km/s
Inclination ( degs )
20.559
Longitude Of Ascending Node
268.556
Argument of Periphelion
73.231
Mean Anomoly
158.056
Dimensions
840-1880 Km
Mass
6.2-70x10^20 Kg
Density
2.0 g/cm2
Surface Gravity
0.2348-0.5254 m/s2
Escape Velocity
0.4441-09939 Km/s
Absolute Magnitude
2.3
Albedo
0.09
Mean Surface Temperature
~45K
Picture + Data Source
N.A.S.A./Wikipedia
