Dwarf planet + Includes
Dysnomia + Primary
Sun + Satellite
| Eris |
Albedo
0.87
Apoapsis
1.45903e+10 km (97.53 AU, 9.06598e+9 mi)
Color
#FFFFFF
Date of discovery
21 October 2003
Dwarf planet mass
1.66e+22 kg (0.00278 M⊕, 0.226 M☾)
Dwarf planet surface area
21,237,166 km² (8,199,715.634 mi², 0.0416 A⊕, 0.56 A☾)
Escape speed
1.305 km/s (4,698 km/h, 0.811 mi/s, 2,919.202 mph)
Inclination
0.771 rad (44.16 °, 49.066 grad)
Maximum temperature
55 K (-218.15 °C, -360.67 °F, 99 °R)
Mean radius
1,300 km (807.783 mi)
Mean temperature
42.5 K (-230.65 °C, -383.17 °F, 76.5 °R)
Minimum temperature
30 K (-243.15 °C, -405.67 °F, 54 °R)
Orbital eccentricity
0.44
Orbital speed
3.436 km/s (12,369.6 km/h, 2.135 mi/s, 7,686.113 mph)
Order
11
Periapsis
5.67425e+9 km (37.93 AU, 3.52581e+9 mi)
Planet density
2,260 kg/m³ (2.26 g/ml, 141.087 lb/ft³)
Satellites
1
Semi-major axis
1.01326e+10 km (67.732 AU, 6.29608e+9 mi)
Sidereal day
8 h (0.333 da)
Sidereal period
203,590.35 da (557.4 a)
Surface gravity
0.655 m/s² (2.15 ft/s², 0.0668 g)
Titius-Bode prediction
154 AU
Discoverer
Michael E. Brown +, David Rabinowitz +, Chad Trujillo +
Member of
Dwarf planet +
Primary
Sun +
Satellite
Dysnomia +
Categories Astronomy +, Dwarf planet +, Solar system +
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