NGC 6531
NGC 6531 is a open cluster located in the constellation of Sagittarius. The NGC is a catalog of 7,840 nebulae, star clusters, and galaxies. Here are the key stats on NGC 6531:
| NGC: | NGC 6531 |
| Messier: | M 21 |
| Type: | open cluster |
| Constellation: | Sagittarius |
| V-mag (visual): | 5.9 |
| Right Ascension: | 18:04:13.45 |
| Declination: | -22:29:24.20 |
| Major axis: | 6 ' |
| Radial velocity: | -18 km/s |
| Redshift: | -0.00006 |
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS