NGC 643B
NGC 643B is a lenticular galaxy located in the constellation Hydrus. Some key stats include:
| NGC: | NGC 643B |
| Type: | galaxy |
| Galaxy type: | lenticular |
| Galaxy morph class: | S0-a |
| Constellation: | Hydrus |
| Surface brightness: | 24.3 mag/arcsec2 |
| B-magnitude (blue): | 14.6 |
| J-magnitude (IR): | 11.3 |
| H-magnitude (IR): | |
| K-magnitude (IR): | 10.4 |
| Right Ascension: | 01:39:12.73 |
| Declination: | -75:00:40.00 |
| Major axis: | 1.75 ' |
| Minor axis: | 0.47 ' |
| Angle (major axis): | 116° |
| Radial velocity: | 4004 km/s |
| Redshift: | 0.013447 |
Right Ascension units = HH:MM:SS.SS
Declination units = DD:MM:SS.SS
PN = planetary nebula