Grigory Neujmin
1590 Tsiolkovskaja, provisional designation , is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 1 July 1933, by Soviet–Russian astronomer Grigory Neujmin at Simeiz Observatory, on the Crimean peninsula. It was named for rocket scientist Konstantin Tsiolkovsky.