Last names of the 2 men who in 1995 discovered a moving object near a globular cluster in Sagittarius
When near the sun, comets can be the largest objects in the Solar ... Comet C/
1995 O1 (Hale-Bopp), was discovered independently on July 23, ... At the time of 
discovery it was magnitude 10.5 in the constellation of Sagittarius.