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Solar
Dwarf planet

Eris

(136199) Eris

Physical properties

Mean radius
1,163 km
Mass
1.647 × 10²² kg
Density
2.43 g/cm³
Rotation period
15.75 days
Surface gravity
0.82 m/s²
Escape velocity
1.38 km/s

Visual & observation

Geometric albedo
0.96
Absolute magnitude (H)
-1.21
Representative colour
#D8D6CF

Discovery & classification

Discovered by
M. Brown, C. Trujillo, D. Rabinowitz
Discovery date
5 January 2005

1 moons

Dysnomia 350 km 15.8 days

Sources