Right ascension 04 59 17.4 Redshift 0.015010 Galactocentric velocity 4 388 ± 10 km/s | Declination −11° 07′ 07″ Helio radial velocity 4 500 ± 9 km/s | |
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Distance 200 Mly (61.3 Mpc) h−10.73 | ||
NGC 1721 is a lenticular galaxy (S0) located in the constellation Eridanus. It was discovered on the 10th of Nov 1885 by Edward Emerson Barnard. This galaxy is a member of the NGC 1723 Group—consisting of NCG 1723 (the brightest member, 11.7-mag) and a close triplet of NGC 1721, NGC 1725 and NGC 1728.
NGC 1721 is a Dreyer Object (a now archaic astronomical term), meaning that it was included in the original New General Catalogue by JLE Dreyer.
References
NGC 1721 Wikipedia(Text) CC BY-SA