NGC 3631
 
NGC 3631 is a late 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 3631:
| NGC: | NGC 3631 | 
| Type: | galaxy | 
| Galaxy type: | late spiral | 
| Galaxy morph class: | Sc | 
| Constellation: | Ursa Major | 
| Surface brightness: | 22.1 mag/arcsec2 | 
| V-mag (visual): | 10.4 | 
| B-mag (blue): | 10.7 | 
| J-mag (IR): | 8.91 | 
| H-mag (IR): | |
| K-mag (IR): | 8.22 | 
| Right Ascension: | 11:21:02.87 | 
| Declination: | 53:10:10.40 | 
| Major axis: | 3.72 ' | 
| Minor axis: | 3.08 ' | 
| Angle (major axis): | 118° | 
| Radial velocity: | 1149 km/s | 
| Redshift: | 0.00384 | 
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS