NGC_222 References

NGC 222
NGC 222
	NGC 220 (lower right), NGC 222 (middle) and NGC 231 (upper left) with DECam
Observation data ( J2000 epoch)
Right ascension	00h 40m 43.7s
Declination	−73° 23′ 08″
Distance	210000 ly
Apparent magnitude (V)	12.64
Apparent dimensions (V)	1.2′ × 1.2′
Physical characteristics
Mass	6.2×103 M☉
Estimated age	83 Myr
Other designations	ESO 029-SC 004.
Associations
Constellation	Tucana
	See also: Open cluster, List of open clusters

NGC 222 is an open cluster located approximately 210,000 light-years from the Sun in the Small Magellanic Cloud. It is located in the constellation Tucana. It was discovered on August 1, 1826 by James Dunlop.^[4]

References

^ ^a ^b ^c "NASA/IPAC Extragalactic Database". Results for NGC 0222. Retrieved 2016-09-02.
^ ^a ^b "NGC 222". 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 10, 2016.

NGC 222
NGC 220 (lower right), NGC 222 (middle) and NGC 231 (upper left) with DECam
Observation data ( J2000 epoch)
Right ascension	00^h 40^m 43.7^s^[1]
Declination	−73° 23′ 08″^[1]
Distance	210000 ly
Apparent magnitude (V)	12.64^[2]
Apparent dimensions (V)	1.2′ × 1.2′^[2]
Physical characteristics
Mass	6.2×10³^[3] `M`_☉
Estimated age	83 Myr^[3]
Other designations	ESO 029-SC 004.^[1]
Associations
Constellation	Tucana
See also: Open cluster, List of open clusters