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 a member of 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.[a][5][6]
- SN 2008N (Type II, mag. 17.8) was discovered by Alex Filippenko, D. Winslow, and W. Li on 17 January 2008.[7][8]
See also
Notes
- Some sources incorrectly list the discovery date of SN 1936A as 2 January 1936.
