NGC 4246
| NGC 4246 | |
|---|---|
 Spiral galaxy NGC 4246 | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 17m 58.1131s[1] |
| Declination | +07° 11′ 09.376″[1] |
| Redshift | 0.012405[1] |
| Heliocentric radial velocity | 3719 ± 2 km/s[1] |
| Distance | 172.01 ± 10.57 Mly (52.74 ± 3.241 Mpc)[1] |
| Apparent magnitude (V) | 12.7[1] |
| Characteristics | |
| Type | SA(s)c[1] |
| Size | ~133,600 ly (40.97 kpc) (estimated)[1] |
| Apparent size (V) | 2.3′ × 1.2′[1] |
| Other designations | |
| HOLM 359B, 2MASX J12175811+0711091, IC 3113, UGC 7334, MCG +01-31-041, PGC 39479, CGCG 041-070[1] | |
NGC 4246 is a spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 4064 ± 24 km/s, which corresponds to a Hubble distance of 195.5 ± 13.7 Mly (59.94 ± 4.21 Mpc).[1] However, 20 non-redshift measurements give a distance of 172.01 ± 10.57 Mly (52.740 ± 3.241 Mpc).[2] It was discovered by German-British astronomer William Herschel on 13 April 1784.[3] It was also observed by German astronomer Arnold Schwassmann on 30 October 1899 and listed in the Index Catalogue as IC 3113.[3]
According to the SIMBAD database, NGC 4246 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[4]
NGC 4246 along with NGC 4235 and NGC 4247 are listed together as Holm 359 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[5]
Supernovae
Two supernovae have been observed in NGC 4273. SN 1975C (type unknown, mag. 18) was discovered by American astronomer Charles Kowal on 15 March 1975.[6] SN 1984U (type unknown, mag. 18) was discovered by L. E. Gonzalez at the Cerro El Roble Observatory on 29 May 1984.[7]
See also
References
- ^ a b c d e f g h i j k "Results for object NGC 4246". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 22 November 2024.
- ^ "Distance Results for NGC 4246". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 22 November 2024.
- ^ a b Seligman, Courtney. "New General Catalogue Objects: NGC 4246". Celestial Atlas. Retrieved 22 November 2024.
- ^ "NGC 4246". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 22 November 2024.
- ^ Holmberg, Erik (1937). "A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems". Annals of the Observatory of Lund. 6: 1. Bibcode:1937AnLun...6....1H.
- ^ "SN 1975C". Transient Name Server. IAU. Retrieved 22 November 2024.
- ^ "SN 1984U". Transient Name Server. IAU. Retrieved 22 November 2024.
External links
Media related to NGC 4246 at Wikimedia Commons- NGC 4246 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
