NGC 4145

Alt. Designations: NGC 4145
Object Type: barred spiral galaxy
Constellation: Canes Venatici
Distance: 44 mly
Right Ascension: 12h 10m 01.7s
Declination: +39° 52´ 58"
Visual Magnitude: 10.8
Apparent Dimension: 5.9´ X 4.1´
Best Month To View: Apr

NGC 4145 is around 44 million light years away and is part of the Ursa Major cluster of galaxies. This cluster contains many bright spirals for which NGC 4145 is a member. However this galaxy is considered relatively "anemic" due to the fact that unlike most spiral galaxies it does not have alot of star formation taking place. While the spiral arms of this galaxy are punctuated by some activity, the rest of the galaxy is quite quiet. Indeed astronomers suggest that a galaxy like this will soon (in galactic terms) lose the impetus to form stars and settle down to become a lenticular galaxy. Interestingly this galaxy is interacting with another (NGC 4151). This may help maintain the star formation in NGC 4145. In fact close inspection of the nucleus of NGC 4145 seems to indicate that the tug of NGC 4151 has displaced it from its position in the center of NGC 4145.