NGC 3646
NGC 3646 is a late spiral galaxy located in the constellation Leo. Some key stats include:
| NGC: | NGC 3646 |
| Type: | galaxy |
| Galaxy type: | late spiral |
| Galaxy morph class: | Sc |
| Constellation: | Leo |
| Surface brightness: | 22.3 mag/arcsec2 |
| V-magnitude (visual): | 11.2 |
| B-magnitude (blue): | 11.7 |
| J-magnitude (IR): | 9.43 |
| H-magnitude (IR): | |
| K-magnitude (IR): | 8.84 |
| Right Ascension: | 11:21:43.08 |
| Declination: | 20:10:10.40 |
| Major axis: | 3.09 ' |
| Minor axis: | 1.48 ' |
| Angle (major axis): | 45° |
| Radial velocity: | 4221 km/s |
| Redshift: | 0.01418 |
Right Ascension units = HH:MM:SS.SS
Declination units = DD:MM:SS.SS
PN = planetary nebula