NGC 6558
NGC 6558 is a globular cluster located in the constellation Sagittarius. Some key stats include:
| NGC: | NGC 6558 |
| Type: | globular cluster |
| Constellation: | Sagittarius |
| V-magnitude (visual): | 11.2 |
| B-magnitude (blue): | 12.3 |
| Right Ascension: | 18:10:18.38 |
| Declination: | -31:45:48.50 |
| Major axis: | 5.4 ' |
| Radial velocity: | -195 km/s |
| Redshift: | -0.00064 |
Right Ascension units = HH:MM:SS.SS
Declination units = DD:MM:SS.SS
PN = planetary nebula