Globular Cluster M79 (NGC 1904), class V, in Lepus

[m79.jpg]
Right Ascension 05 : 24.5 (h:m)
Declination -24 : 33 (deg:m)
Distance 41.1 (kly)
Visual Brightness 7.7 (mag)
Apparent Dimension 8.7 (arc min)
Discovered by Pierre Mechain
     1780

M79 is a beautiful globular cluster at a quite unusual location in the sky: Most globulars are grouped around the Galactic center, but this is one of the few which are situated in the other hemisphere, i.e. it is beyond us for hypothetical observers in the central stellar bulge of our Milky Way galaxy. It is little over 40,000 light years from us, but about 60,000 light years from the galactic center.

M79's apparent diameter of 8.7 minutes of arc corresponds to a linear extension of over 100 light years. This cluster is slightly elliptical, extended at position angle 45 deg, and has only 7 known variables. It is receding at about 200 km/sec.

Messier observed M79 on December 17th, 1780 "Nebula without a star lying below Lepus, and on the same parallel as a sixth magnitude star." Charles Messier from his catalogue

Courtesy www.seds.org