NGC 4273
Galaxy in the constellation Virgo
From Wikipedia, the free encyclopedia
NGC 4273 is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 2727 ± 24 km/s, which corresponds to a Hubble distance of 131.2 ± 9.3 Mly (40.23 ± 2.84 Mpc).[1] However, 20 non-redshift measurements give a much closer distance of 94.72 ± 4.68 Mly (29.040 ± 1.435 Mpc).[2] It was discovered by German-British astronomer William Herschel on 17 April 1786.[3]
| NGC 4273 | |
|---|---|
NGC 4273 imaged by the Vera C. Rubin Observatory | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 19m 56.0407s[1] |
| Declination | +05° 20′ 36.497″[1] |
| Redshift | 0.007942[1] |
| Heliocentric radial velocity | 2381 ± 2 km/s[1] |
| Distance | 94.72 ± 4.68 Mly (29.040 ± 1.435 Mpc)[1] |
| Group or cluster | NGC 4235 group (LGG 281) |
| Apparent magnitude (V) | 11.9[1] |
| Characteristics | |
| Type | SB(s)c[1] |
| Size | ~68,900 ly (21.12 kpc) (estimated)[1] |
| Apparent size (V) | 2.3′ × 1.5′[1] |
| Other designations | |
| IRAS 12173+0537, 2MASX J12195606+0520361, UGC 7380, MCG +01-32-008, PGC 39738, CGCG 042-028[1] | |
According to A.M. Garcia, NGC 4273 is one of the galaxies in the NGC 4235 group (also known as LGG 281). This galaxy group contains at least 29 members, of which 18 appear in the New General Catalogue and 4 in the Index Catalogue.[4]
Supernovae
Two supernovae have been observed in NGC 4273:
- SN 1936A (Type II, mag. 14.5) was discovered by Edwin Hubble and Glenn Moore on 21 January 1936.[5][6] [Note: Some sources incorrectly cite the discovery date of SN 1936A as 2 January 1936.]
- SN 2008N (Type II, mag. 17.8) was discovered by Alex Filippenko, D. Winslow, and W. Li on 17 January 2008.[7][8]
