Eris

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Eris
Eris (minor-planet designation 136199 Eris) is the most massive and second-largest dwarf planet known in the Solar System. It is also the ninth-most-massive known body directly orbiting the Sun. Eris is 27% more massive than dwarf planet Pluto, though Pluto is slightly larger by volume. Eris's mass is about 0.27% of the Earth's mass. ts orbital characteristics more specifically categorize it as a scattered-disk object (SDO), or a TNO that has been "scattered" from the Kuiper belt into more-distant and unusual orbits following gravitational interactions with Neptune as the Solar System was forming. Eris (dwarf planet) - Wikipedia, the free encyclopedia
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Short Description Eris (minor-planet designation 136199 Eris) is the most massive and second-largest dwarf planet known in the Solar System. It is also the ninth-most-massive known body directly orbiting the Sun. Eris is 27% more massive than dwarf planet Pluto, though Pluto is slightly larger by volume. Eris's mass is about 0.27% of the Earth's mass. ts orbital characteristics more specifically categorize it as a scattered-disk object (SDO), or a TNO that has been "scattered" from the Kuiper belt into more-distant and unusual orbits following gravitational interactions with Neptune as the Solar System was forming. Eris (dwarf planet) - Wikipedia, the free encyclopedia
Discovered by M. E. Brown, C. A. Trujillo, D. L. Rabinowitz
Discovery date January 5, 2005
Type Dwarf planet
Satellite of Sun
Minor planet number 136199
Orbit Prograde
Rotation Direct
Satellites Has satellites
Shape Equilibrium spheroid
Apoapsis 11 14 602 000 000 km
Periapsis 10 5 723 000 000 km
Semi-major axis 11 10 166 000 000 km
Distance from Sun 02 67.781 au
Eccentricity 0.44068
Orbital period 558.04 year | 203 830 days
Orbital speed 01 3.4338 km/s
Mean anomaly 204.16°
Inclination to the ecliptic 044.0445°
Longitude of the ascending node 035.9531°
Argument of periapsis 150.977°
Diameter/Size 04 2 326 km
Mass 1022×1.66 ± 0.02 kg | 0.0028 Earths| 0.23 Moons
Density 01 2.52 ± 0.07 g/cm3
Surface gravity  0.82 ± 0.02 m/s2 | 0.083 g
Escape velocity 04 1 380 m/s
Rotation period 25.9±0.5 hour
Albedo Bond 0.96
Temperature min 02 30 K
Temperature mean 02 42.5 K
Temperature max 02 55 K
Apparent magnitude 18.7
Absolute magnitude −1.17
Angular diameter 40″
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