Messier 14, from 2MASS
|Observation data (J2000 epoch)|
|Right ascension||17h 37m 36.15s|
|Declination||-03° 14′ 45.3″|
|Distance||30.3 kly (9.3 kpc)|
|Apparent magnitude (V)||+8.32|
|Apparent dimensions (V)||11.0′|
|Mass||- kg (- M)|
|Other designations||NGC 6402|
At a distance of about 30,000 light-years, M14 contains several hundreds of thousands of w:stars. At an w:apparent magnitude +7.6 it can be easily observed with w:binoculars. Medium-sized w:telescopes will show some hint of the individual stars of which the brightest is of magnitude +14.
The total w:luminosity of M14 is in the order of 400,000 times that of the w:Sun corresponding to an w:absolute magnitude of -9.12. The shape of the cluster is decidedly elongated. M14 is about 100 light-years across.
A respectable total of 70 w:variable stars is known in M14, many of the W Virginis variety common in globular clusters. In w:1938, a w:nova appeared although this was not discovered until w:photographic plates from that time were studied in w:1964. It is estimated that the nova reached a maximum brightness of magnitude +9.2, over five times brighter than the brightest 'normal' star in the cluster.
Slightly over 3° southwest of M14 lies the faint globular cluster NGC 6366.