出典:Wikipedia
出典:『Wikipedia』 (2011/07/23 16:33 UTC 版)
Messier 98 (also known as M98 or NGC 4192) is an intermediate spiral galaxy about 60 million light-years away in the constellation Coma Berenices. It was discovered by Pierre Méchain on March 15, 1781 along with M99 and M100 and was cataloged as a Messier object on April 13, 1781. Messier 98 has a blue shift and is approaching us at about 140 km per second.