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M 14

Kroglasta kopica - Globular Cluster M14 (NGC 6402), class VIII, in ophiuchus

Rektascenzija 17 : 37.6 (u:m)
Deklinacija -03 : 15 (sto:m)
Razdalja 27.4 (*1000 sv.l.)
Vizual. magnituda 7.6 (mag)
Zorni kot 11.7 (loc min)

M14 is a slightly elliptically shaped stellar swarm, about 55 light years across and 23,000 light years away. It lacks a dense central condensation (Burnham), and contains a considerably large number of over 70 variables.

In 1938, a nove appeared in M14, which however was not discovered before 1964, when Amelia Wehlau of the University of Western Ontario surveyed a collection of photographic plates taken by Helen Sawyer Hogg between 1932 and 1963. This nova was visible on 8 plates, taken between June 21-28, 1938, as a 16th mag star. It was the second known nova in a globular cluster after that of 1860 in M80, T Scorpii, and the first one ever photographed.

Globular cluster M14 was the first CCD image taken, according to TheSky advertising.

Vec posnetkov M14

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

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