| NGC 6144 | |
|---|---|
NGC 6144, imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Class | XI |
| Constellation | Scorpius |
| Right ascension | 16h 27m 14.1s |
| Declination | –26° 01′ 29″ |
| Apparent magnitude (V) | +9.63 |
| Apparent dimensions (V) | 1.8′ |
| Physical characteristics | |
| Metallicity | [Fe/H] = −1.81±0.12 dex |
NGC 6144 is a globular cluster in the constellation Scorpius, located almost exactly 1° away from its brighter counterpart globular cluster Messier 4. It is relatively close to and is partially obscured by the Rho Ophiuchi cloud complex. The cluster has a very low core stellar density for a globular cluster and harbors a handful of X-ray radiation sources.