NGC 6144

NGC 6144 is a globular cluster in the constellation Scorpius, located almost exactly 1° away from its brighter counterpart globular cluster Messier 4.^[5] It is relatively close to and is partially obscured by the Rho Ophiuchi cloud complex.^[4] The cluster has a very low core stellar density for a globular cluster and harbors a handful of X-ray radiation sources.^[6]

NGC 6144
NGC 6144, imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Class	XI[1]
Constellation	Scorpius
Right ascension	16h 27m 14.1s[2]
Declination	–26° 01′ 29″[2]
Apparent magnitude (V)	+9.63[3]
Apparent dimensions (V)	1.8′[1]
Physical characteristics
Metallicity	${\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}$ = −1.81±0.12[4] dex
See also: Globular cluster, List of globular clusters