46 Hestia

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46 Hestia
Discovery
Discovered by Norman Robert Pogson
Discovery date August 16, 1857
Designations
Alternative names  
Minor planet
category		 Main belt
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 442.886 Gm (2.961 AU)
Perihelion 312.736 Gm (2.091 AU)
Semi-major axis 377.811 Gm (2.526 AU)
Eccentricity 0.172
Orbital period 1465.958 d (4.01 a)
Average orbital speed 18.60 km/s
Mean anomaly 45.401°
Inclination 2.342°
Longitude of ascending node 181.168°
Argument of perihelion 176.882°
Physical characteristics
Dimensions 124.1 km
Mass 2.0×1018 kg
Mean density ? g/cm³
Equatorial surface gravity 0.0347 m/s²
Escape velocity 0.0656 km/s
Rotation period ? d
Albedo 0.052 [1]
Temperature ~175 K
Spectral type C
Absolute magnitude 8.36

46 Hestia (IPA: /ˈhɛstiə/) is a large, dark Main belt asteroid. It is also the primary body of the Hestia asteroid clump. It was discovered by N. R. Pogson on August 16, 1857 and is named after Hestia, Greek goddess of the hearth.

[edit] References

  1. ^ Asteroid Data Sets
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