NGC 3172 (also known as Polarissima Borealis[1]) is a lenticular galaxy located in the constellation Ursa Minor. It is the closest NGC object to the north celestial pole.[1] Discovered by John Herschel in 1831, it is about 285 million light-years away and about 85 thousand light-years across.[3]
| NGC 3172 | |
|---|---|
 Pan-STARRS image of NGC 3172 | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Minor |
| Right ascension | 11h 47m 11.928s[1] |
| Declination | +89° 05′ 35.77″[1] |
| Apparent magnitude (V) | 14.9[1] |
| Characteristics | |
| Type | S0[2] |
| Apparent size (V) | 0.92′ × 0.79′[1] |
| Notable features | Closest NGC object to the north celestial pole. |
| Other designations | |
| NGC 3172, PGC 36847, MCG 15-1-11 | |
Two supernovae have been observed in NGC 3172. SN 2010af (type Ia, mag. 17.2), was discovered on 4 March, 2010.[4] SN 2017gla (type Ia, mag. 16), was discovered on 1 September, 2017.[5]
See also
edit- NGC 2573 - the closest NGC object to the south celestial pole.
References
edit- ^ a b c d e f SIMBAD:%20NGC%203054%20--%20Galaxy "NGC 3172". sim-id. Retrieved 2020-05-29.
- ^ "Search specification: NGC 3172". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 2021-02-24.
- ^ "New General Catalog Objects: NGC 3150 - 3199". cseligman.com. Retrieved 2020-05-30.
- ^ "Bright Supernovae - 2010". www.rochesterastronomy.org. Retrieved 2020-05-30.
- ^ Transient Name Server entry for SN 2017gla. Retrieved 24 March 2023.
External links
edit- SIMBAD: NGC 3054 -- Galaxy
- NGC 3172 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
.jpg){kind=small} | This lenticular galaxy article is a stub. You can help Wikipedia by expanding it. |