. "1495Z"^^ . "1495-04-16Z"^^ . "Petrus Apianus (16 April 1495 \u2013 21 April 1552), also known as Peter Apian, was a German humanist, known for his works in mathematics, astronomy and cartography.The lunar crater Apianus and minor planet 19139 Apian are named in his honour."@en . . "Apianus, Petrus"@en . . "1552Z"^^ . . "1552-04-21Z"^^ . "German astronomer, mathematician and cartographer" .