| Koposov 1 | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 11h 59m 18.05s |
| Declination | +12° 15′ 36.0″ |
| Distance | 157.5 kly (48.3 kpc) |
| Apparent magnitude (V) | 14.20 |
| Physical characteristics | |
| Radius | approx. 3 pc (9.8 ly) |
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.