NGC 231 is an open cluster in the Small Magellanic Cloud. It is located in the constellation Tucana. It was discovered on August 1, 1826 by James Dunlop.[4]
| NGC 231 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Right ascension | 00h 41m 06.4s[1] |
| Declination | −73° 21′ 09″[1] |
| Distance | ~210000 |
| Apparent magnitude (V) | 12.87[2] |
| Apparent dimensions (V) | 1.8′ × 1.8′[2] |
| Physical characteristics | |
| Mass | 6.9×103[3] M☉ |
| Estimated age | 87 Myr[3] |
| Other designations | ESO 029-SC 005.[1] |
| Associations | |
| Constellation | Tucana |
References
edit- ^ a b c "NASA/IPAC Extragalactic Database". Results for NGC 0231. Retrieved 2016-09-02.
- ^ a b "NGC 231". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 December 2016.
- ^ a b Gatto, M.; Ripepi, V.; Bellazzini, M.; Tosi, M.; Cignoni, M.; Tortora, C.; Leccia, S.; Clementini, G.; Grebel, E. K.; Longo, G.; Marconi, M.; Musella, I. (2021). "STEP survey – II. Structural analysis of 170 star clusters in the SMC". Monthly Notices of the Royal Astronomical Society. 507 (3): 3312–3330. arXiv:2108.02791. doi:10.1093/mnras/stab2297.
- ^ "New General Catalog Objects: NGC 200 - 249". Cseligman. Retrieved September 15, 2016.