Answer:
'Pallas or 2 Pallas is the Second Largest Asteroid according to it's Diameter'. Its Diameter is some 530–565 km. It's Diameter is comparable to or slightly larger than that of 4 Vesta. It's mass is estimated to be 7% of the total mass of the Asteroid Belt. It's Mass is about (2.11±0.26) × 1020 kg. It was discovered by Heinrich Wilhelm Matthäus Olbers, a German Astronomer on March 28, 1802. It was his second discovery of an Asteroid.
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