NGC 1721
NGC 1721 is a lenticular galaxy located in the constellation Eridanus. Some key stats include:
| NGC: | NGC 1721 |
| Type: | galaxy |
| Galaxy type: | lenticular |
| Galaxy morph class: | S0 |
| Constellation: | Eridanus |
| Surface brightness: | 23.5 mag/arcsec2 |
| B-magnitude (blue): | 13.8 |
| J-magnitude (IR): | 10.2 |
| H-magnitude (IR): | |
| K-magnitude (IR): | 9.54 |
| Right Ascension: | 04:59:17.40 |
| Declination: | -11:07:07.40 |
| Major axis: | 1.58 ' |
| Minor axis: | 0.83 ' |
| Angle (major axis): | 130° |
| Radial velocity: | 4439 km/s |
| Redshift: | 0.014918 |
Right Ascension units = HH:MM:SS.SS
Declination units = DD:MM:SS.SS
PN = planetary nebula