Koposov 1

Koposov 1 is a low-luminosity globular cluster in the constellation Virgo in the halo of the Milky Way galaxy. It was discovered, along with globular cluster Koposov 2 by S. Koposov et al. in 2007. Koposov 1 and Koposov 2 were described by their discoverers as the "lowest luminosity globular clusters orbiting the Milky Way," along with AM 4, Palomar 1, and Whiting 1.^[2]

Koposov 1
Observation data (J2000 epoch)
Constellation	Virgo
Right ascension	11h 59m 18.05s[1]
Declination	+12° 15′ 36.0″[1]
Distance	157.5 kly (48.3 kpc)[1]
Apparent magnitude (V)	14.20[1]
Physical characteristics
Radius	approx. 3 pc (9.8 ly)[2]
See also: Globular cluster, List of globular clusters