Asteroinj Pallas

The German astronomer Heinrich Wilhelm Matthäus Olbers on 28 March 1802 !

 

Pallas is the second asteroid to have been discovered, after Ceres. It is believed to have a mineral composition similar to carbonaceous chondrite meteorites, like Ceres, though significantly less hydrated than Ceres. It is the third-largest asteroid in the Solar System by

Second name Asteroid :  Pallas 

Diameter km  582 x 556 x 500 

 ~Mass 1015kg  205,000    

Rotation period 7.813 hrs    

Orbital Period 4.61 yrs    

Spectral Class U    

Semi-major Axis 2.772 AU    

Orbital Eccentricity 0.2310    

Orbital inclinaison 34.84 deg