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M 72

Kroglasta kopica - Globular Cluster M72 (NGC 6981), class IX, in aquarius

Rektascenzija 20 : 53.5 (u:m)
Deklinacija -12 : 32 (sto:m)
Razdalja 52.8 (*1000 sv.l.)
Vizual. magnituda 9.3 (mag)
Zorni kot 5.9 (loc min)

M72 is one of the more remote of Messier's globular clusters: At about 53,000 light years, it lies a considerably distance beyond the Galactic center. It is of 9th or 10th apparent magnitude, but as it is so distant it is one of the more intrinsically luminous globular cluster. However, M72 is not very concentrated (Shapley classified it as class IX). It is approaching us quite rapidly, at 255 km/sec, and has the considerable number of 42 known variables. Its diameter is a bit more than 90 light years.

Povzeto po:
Hartmut Frommert (spider@seds.org)
Christine Kronberg (smil@lrz.uni-muenchen.de)

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