| NGC 256 | |
|---|---|
 NGC 256 with DECam | |
| Observation data (J2000 epoch) | |
| Right ascension | 00h 45m 54.11s[1] |
| Declination | −73° 30′ 23.9″[1] |
| Apparent magnitude (V) | 12.50[1] |
| Apparent dimensions (V) | 0.9′ × 0.9′[1] |
| Physical characteristics | |
| Mass | 1.3×103[2] M☉ |
| Estimated age | 83 Myr[2] |
| Other designations | Kron 23, ESO 29-SC11[1] |
| Associations | |
| Constellation | Tucana |
NGC 256 (also known as ESO 29-SC11) is open cluster in the Tucana constellation. It was discovered by John Frederick William Herschel on April 11, 1834.[3]
- ^ a b c d e "NGC 256". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ 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 250 - 299". cseligman.com. Retrieved 12 February 2017.