NGC 721
NGC 721 is a spiral galaxy located in the constellation of Andromeda. The NGC is a catalog of 7,840 nebulae, star clusters, and galaxies. Here are the key stats on NGC 721:
| NGC: | NGC 721 |
| Type: | galaxy |
| Galaxy type: | spiral |
| Galaxy morph class: | Sbc |
| Constellation: | Andromeda |
| Surface brightness: | 23.2 mag/arcsec2 |
| V-mag (visual): | 13.4 |
| B-mag (blue): | 14.1 |
| J-mag (IR): | 11.4 |
| H-mag (IR): | |
| K-mag (IR): | 10.7 |
| Right Ascension: | 01:54:45.46 |
| Declination: | 39:23:00.70 |
| Major axis: | 1.4 ' |
| Minor axis: | 0.83 ' |
| Angle (major axis): | 124° |
| Radial velocity: | 5514 km/s |
| Redshift: | 0.018566 |
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS