NGC 4644
NGC 4644 is a spiral galaxy located in the constellation of Ursa Major. The NGC is a catalog of 7,840 nebulae, star clusters, and galaxies. Here are the key stats on NGC 4644:
| NGC: | NGC 4644 |
| Type: | galaxy |
| Galaxy type: | spiral |
| Galaxy morph class: | Sb |
| Constellation: | Ursa Major |
| Surface brightness: | 23.6 mag/arcsec2 |
| V-mag (visual): | 13.8 |
| B-mag (blue): | 14.6 |
| J-mag (IR): | 11.6 |
| H-mag (IR): | |
| K-mag (IR): | 10.9 |
| Right Ascension: | 12:42:42.66 |
| Declination: | 55:08:43.80 |
| Major axis: | 1.51 ' |
| Minor axis: | 0.63 ' |
| Angle (major axis): | 51° |
| Radial velocity: | 4888 km/s |
| Redshift: | 0.01644 |
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS