Varuna

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Varuna
20000 Varuna is a large classical Kuiper belt object. It is probably a dwarf planet. It rotates rapidly and hence its shape is probably very elongated. Given the rapid rotation, rare for objects so large, Varuna is thought to be an elongated spheroid (ratio of axis 2:3), with a mean density around 1 g/cm3 (roughly the density of water). The surface of Varuna is moderately red (similar to Quaoar) and small amounts of water ice have been detected on its surface. They also find that the most probable composition for the surface of Varuna is a mixture of amorphous silicates (25%), complex organics (35%), amorphous carbon (15%) and water ice (25%). 20000 Varuna - Wikipedia, the free encyclopedia
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Short Description 20000 Varuna is a large classical Kuiper belt object. It is probably a dwarf planet. It rotates rapidly and hence its shape is probably very elongated. Given the rapid rotation, rare for objects so large, Varuna is thought to be an elongated spheroid (ratio of axis 2:3), with a mean density around 1 g/cm3 (roughly the density of water). The surface of Varuna is moderately red (similar to Quaoar) and small amounts of water ice have been detected on its surface. They also find that the most probable composition for the surface of Varuna is a mixture of amorphous silicates (25%), complex organics (35%), amorphous carbon (15%) and water ice (25%). 20000 Varuna - Wikipedia, the free encyclopedia
Discovered by Robert S. McMillan
Discovery date 28 November 2000
Type TNO
AddInfo Cubewano
Satellite of Sun
Minor planet number 20000
Orbit Prograde
Rotation Direct
Apoapsis 10 6 776 600 000 km
Periapsis 10 6 125 600 000 km
Semi-major axis 10 6 451 100 000 km
Distance from Sun 02 43.123 au
Eccentricity 0.050 464
Orbital period 283.19 years | 103 435 days
Orbital speed 01 4.53 km/s
Mean anomaly 105.119°
Inclination to the ecliptic 017.165°
Longitude of the ascending node 097.290°
Argument of periapsis 270.890°
Diameter/Size 03 900 ± 140 km km
Mass 1020×3.7 kg
Density  0.992 g/cm3
Surface gravity  0.22 m/s2
Escape velocity  380 m/s
Rotation period 6.3436 hours | 0.26432 days
Albedo geometric 0.127
Temperature mean 02 42 K | -231 C
Apparent magnitude 19.9
Absolute magnitude 3.760
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