| NGC 1642 | |
|---|---|
 The spiral galaxy NGC 1642 | |
| Observation data (J2000 epoch) | |
| Constellation | Taurus |
| Right ascension | 04 42 54.9213 |
| Declination | +00° 37′ 07.198″ |
| Redshift | 0.015419 |
| Heliocentric radial velocity | 4622 ± 0 km/s |
| Distance | 220.1 ± 15.4 Mly (67.48 ± 4.72 Mpc) |
| Apparent magnitude (V) | 12.6 |
| Characteristics | |
| Type | SA(rs)c |
| Size | ~42,400 ly (13.01 kpc) (estimated) |
| Apparent size (V) | 1.7′ × 1.2′ |
| Other designations | |
| IRAS 04403+0031, 2MASX J04425489+0037070, UGC 3140, MCG +00-12-072, PGC 15867, CGCG 393-073 | |
NGC 1642 is a spiral galaxy in the constellation of Taurus. Its velocity with respect to the cosmic microwave background is 4575 ± 3 km/s, which corresponds to a Hubble distance of 220.1 ± 15.4 Mly (67.48 ± 4.72 Mpc). However, one non-redshift measurement gives a much closer distance of 69 Mly (21.3 Mpc). It was discovered by German astronomer Heinrich d'Arrest on 29 December 1861.
One supernova has been observed in NGC 1642: SN 2023bhm (type Ia-91bg-like, mag. 18.1) was discovered by the Zwicky Transient Facility on 2 February 2023.
NGC 1762 Group
According to A.M. Garcia, the galaxy NGC 1642 is part of the NGC 1762 group (also known as LGG 120) that includes at least 27 galaxies, including IC 392, NGC 1590, NGC 1633, NGC 1691, NGC 1713, NGC 1719, and NGC 1762, among others.
See also
References
- ^ "Results for object NGC 1642". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 28 July 2024.
- "Distance Results for NGC 1642". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 13 December 2024.
- Seligman, Courtney. "New General Catalogue Objects: NGC 1642". Celestial Atlas. Retrieved 13 December 2024.
- "SN 2023bhm". Transient Name Server. IAU. Retrieved 13 December 2024.
- Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
External links
Media related to NGC 1642 at Wikimedia Commons- NGC 1642 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
| Astronomical catalogs | |
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| NGC | |
| New General Catalogue 1500 to 1999 | |
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