| NGC 3172 | |
|---|---|
 Pan-STARRS image of NGC 3172 | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Minor |
| Right ascension | 11 47 11.928 |
| Declination | +89° 05′ 35.77″ |
| Apparent magnitude (V) | 14.9 |
| Characteristics | |
| Type | S0 |
| Apparent size (V) | 0.92′ × 0.79′ |
| Notable features | Closest NGC object to the north celestial pole. |
| Other designations | |
| NGC 3172, PGC 36847, MCG 15-1-11 | |
NGC 3172 (also known as Polarissima Borealis) is a lenticular galaxy located in the constellation Ursa Minor. It is the closest NGC object to the north celestial pole. Discovered by John Herschel in 1831, it is about 285 million light-years away and about 85 thousand light-years across.
Two supernovae have been observed in NGC 3172. SN 2010af (type Ia, mag. 17.2), was discovered on 4 March, 2010. SN 2017gla (type Ia, mag. 16), was discovered on 1 September, 2017.
See also
- NGC 2573 - the closest NGC object to the south celestial pole.
References
- ^ 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
- SIMBAD: NGC 3054 -- Galaxy
- NGC 3172 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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