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
NGC 220 (lower right), NGC 222 (middle) and NGC 231 (upper left) with DECam
Observation data (J2000 epoch)
Right ascension00h 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
Mass6.9×103[3] M
Estimated age87 Myr[3]
Other designationsESO 029-SC 005.[1]
Associations
ConstellationTucana
See also: Open cluster, List of open clusters

References

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  1. ^ a b c "NASA/IPAC Extragalactic Database". Results for NGC 0231. Retrieved 2016-09-02.
  2. ^ a b "NGC 231". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 December 2016.
  3. ^ 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.
  4. ^ "New General Catalog Objects: NGC 200 - 249". Cseligman. Retrieved September 15, 2016.