NGC 5090 and NGC 5091
NGC 5090 and NGC 5091 are a set of galaxies approximately 160 million light-years (50 million parsecs) away in the constellation Centaurus. They are in the process of colliding and merging with some evidence of tidal disruption of NGC 5091.
| NGC 5090 and NGC 5091 | |
|---|---|
NGC 5091 (left) and NGC 5090 (right) | |
| Observation data (J2000 epoch) | |
| Constellation | Centaurus |
| Right ascension | 5090: 13h 21m 12.8s 5091: 13h 21m 17.7s |
| Declination | 5090: −43° 42′ 16.4″ 5091: −43° 43′ 10.8″ |
| Redshift | 5090: 0.01141±0.00007 5091: 0.01177±0.00048 |
| Heliocentric radial velocity | 5090: 3,420.93±20.98 5091: 3,528.86±145.10 |
| Distance | 5090: 50.37 ± 3.55 Mpc (164.3 ± 11.6 Mly) 5091: 51.85 ± 4.15 Mpc (169.1 ± 13.5 Mly) |
| Apparent magnitude (V) | 5090: 11.51 5091: 13.35 |
| Apparent magnitude (B) | 5090: 12.59 5091: 13.94 |
| Absolute magnitude (V) | 5090: −24.8 5091: −21.0 |
| Characteristics | |
| Type | 5090: E2 5091: Sb pec sp |
| Apparent size (V) | 5090: 2′.9 × 2′.4 5091: 1′.8 × 0′.5 |
| Notable features | Interacting galaxies |
| Other designations | |
| PGC 46618 / 46626, ESO 270-2 / 270-4, LEDA 46618 / 46626, 2MASX J13211286-4342168 / J13211859-4343244 | |
References: | |
NGC 5090 is an elliptical galaxy while NGC 5091 is a barred spiral galaxy. The radial velocity of the nucleus of NGC 5090 has been measured at 3,185 km/s (1,979 mi/s), while NGC 5091 has a radial velocity of 3,429 km/s (2,131 mi/s). NGC 5090 is associated with the strong, double radio source PKS 1318-43.
One supernova has been observed in NGC 5090: SN 1981C (type unknown, mag. 14.5).
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