Donald Edward Machholz Jr (b. 1952) is an American amateur astronomer. He discovered visually 11 new comets in 1978--2010 (including periodic comets 96P and 141P). He is one of the inventors of the Messier Marathon.
Avastatud: 26-9-2006 Avastamiskoht: Moletai Avastajad: Cernis, K.