NGC 1721
NGC 1721 | |
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Observation data (J2000 epoch) | |
Constellation | Eridanus |
Right ascension | 04h 59m 17.4s[1] |
Declination | −11° 07′ 07″[1] |
Redshift | 0.015010[1] |
Heliocentric radial velocity | 4 500 ± 9 km/s[1] |
Galactocentric velocity | 4 388 ± 10 km/s[1] |
Distance | 200 Mly (61.3 Mpc)[1] |
Characteristics | |
Type | (R')SAB00(s)[1] |
Size | 36.92 by 17.58 kpc[1] |
Other designations | |
MCG -02-13-027, PGC 16484[1] |
NGC 1721 is a lenticular galaxy (S0) located in the constellation Eridanus. It was discovered on the 10th of Nov 1885[2] by Edward Emerson Barnard. This galaxy is a member of the NGC 1723 Group—consisting of NGC 1723 (the brightest member, 11.7-mag) and a close triplet of NGC 1721, NGC 1725 and NGC 1728.[3]
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.[4]
References
[edit]- ^ a b c d e f g h i "NED results for object NGC 1721". NASA/IPAC Extragalactic Database (NED). Retrieved March 15, 2012.
- ^ "cseligman.com".
- ^ "NGC 1723 Group". DeepSkyPedia.
- ^ Burnham, S. W. (1894). "Observations of nebulae with the 36-inch refractor of the Lick Observatory – by S. W. Burnham (Publications of the Lick Observatory)". Publications of Lick Observatory. 2: 168. Bibcode:1894PLicO...2..168B.
External links
[edit]Media related to NGC 1721 at Wikimedia Commons