NGC 4790
Galaxy in the constellation Virgo
From Wikipedia, the free encyclopedia
NGC 4790 is a barred spiral galaxy located in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 1679 ± 24 km/s, which corresponds to a Hubble distance of 80.8 ± 5.8 Mly (24.76 ± 1.77 Mpc) away from the Solar System.[1] In addition, six non-redshift measurements give a distance of 74.75 ± 4.07 Mly (22.917 ± 1.249 Mpc).[2] NGC 4790 was discovered on 25 March 1786 by German-British astronomer William Herschel.[3]
| NGC 4790 | |
|---|---|
NGC 4790 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 54m 51.956s[1] |
| Declination | −10° 14′ 52.2″[1] |
| Redshift | 0.004483[1] |
| Heliocentric radial velocity | 1344 ± 5 km/s[1] |
| Distance | 80.8 ± 5.8 Mly (24.76 ± 1.77 Mpc)[1] |
| Group or cluster | NGC 4699 Group |
| Apparent magnitude (V) | 12.4 |
| Characteristics | |
| Type | SB(rs)c?[1] |
| Size | ~45,500 ly (13.95 kpc) (estimated)[1] |
| Apparent size (V) | 1.55′ × 1.0′[1] |
| Other designations | |
| IRAS 12522-0958, MCG -02-33-056, PGC 43972[1] | |
NGC 4790 is a member of the NGC 4699 Group (also known as LGG 307) of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.[4][5]
One supernova has been observed in NGC 4790. SN 2012au (type Ib, mag. 13.8) was discovered by the Catalina Sky Survey on 14 March 2012.[6][7] This supernova later produced evidence of a pulsar wind nebula which appears to be expanding outward at approximately 2300 km/s.[8]
