NGC 4650A
| NGC 4650A | |
|---|---|
A Hubble Space Telescope (HST) image of NGC 4650A | |
| Observation data (J2000 epoch) | |
| Constellation | Centaurus |
| Right ascension | 12h 44m 49.035s |
| Declination | −40° 42′ 51.69″ |
| Redshift | 0.009607 |
| Heliocentric radial velocity | 2,908.5±3.6 km/s |
| Distance | 130 Mly (39.8 Mpc) |
| Group or cluster | Centaurus Cluster |
| Apparent magnitude (V) | 13.3 |
| Apparent magnitude (B) | 14.72 |
| magnitude (K) | 11.02 |
| Characteristics | |
| Type | S0/a pec |
| Mass | 4.5×1010 M☉ |
| Apparent size (V) | 1.6′ × 0.8′ |
| Notable features | Polar-ring galaxy |
| Other designations | |
| NGC 4650A, LEDA 42951, PGC 42951 | |
NGC 4650A is a lenticular galaxy of the rare polar-ring type, located in the southern constellation of Centaurus. It has an apparent visual magnitude of 13.3 and spans an angular size of 1.6′ × 0.8′. This galaxy is located at an estimated distance of 130 million light-years (39.8 Mpc) and is receding with a heliocentric radial velocity of 2,908.5 km/s. It should not be confused with the nearby spiral galaxy NGC 4650; the physical distance between both galaxies is only about 6 times the optical radius of NGC 4650. NGC 4650A lies in a chain of five galaxies in the Centaurus Cluster.