VESTA - A large asteroid in the asteroid belt discovered by Heinrich Wilhelm Olbers 29 March 1807

Orbital Tour of VESTA by the DAWN Spacecraft 2011-2012 from a 210 km orbit above Vesta

Physical Characteristics:

Dimensions (572.6 km557.2 km 446.4 km)0.2 km  525.40.2 km (mean)
Mass (2.590760.00001)10 to the 20 kg
Mean density 3.456 g/cm
Equatorial acceleration due to gravity 0.25 m/s2  0.025 g
Escape velocity 0.36  km/s
Rotation period 0.2226 d (5.342 h)
Albedo 0.423 (geometric)
Temperature min: 85 K (-188 C)  max: 270 K (-3 C)

Orbital Characteristics:

Epoch 2010-Jul-23 (JD 2455400.5)
Aphelion 2.571 AU (384.72 million km)
Perihelion 2.1526 AU (321.82 million km)
Semi-major axis 2.362 AU (353.268 million km)
Eccentricity 0.08862
Orbital period 3.63 Earth years (1325.85 d)
Average orbital speed 19.34 km/s
Mean anomaly 307.80
Inclination 7.134 to Ecliptic 5.56 to Invariable plane

Satellites: None