Did you mean: 989 Schwassmann
989 Schwassmannia
Asteroid
989 Schwassmannia is a stony background asteroid and a slow rotator from the central regions of the asteroid belt, approximately 12.5 kilometers in diameter. It was discovered on 18 November 1922, by astronomer Friedrich Karl Arnold Schwassmann at... Wikipedia
Orbits: Sun
Minor planet category: main-belt · (middle); background