Simplify the following text for a Grade 6 native English-speaking person.
Original: Pallas , formally designated 2 Pallas , is the second asteroid to have been discovered , by astronomer Heinrich Wilhelm MatthÃ us Olbers on March 28 , 1802 .
Simplified: 2 Pallas is the second asteroid discovered in the solar system . It was discovered by Heinrich Wilhelm MatthÃ us Olbers on March 28 , 1802 .