NGC 4163, also known as NGC 4167, is a dwarf irregular galaxy in the constellation Canes Venatici, about 9.65 million light-years away. It was discovered by William Herschel on April 28, 1785 as NGC 4163. John Herschel discovered it again on March 11, 1831 as NGC 4167. It has a size on the night sky of 1.9' x 1.6', which, at its distance, gives a diameter of 4000 light-years. This galaxy consists of young blue stars.[2] It is a member of the M94 Group.[3][4][5]
| NGC 4163 | |
|---|---|
 Hubble Space Telescope image of NGC 4163 | |
| Observation data (J2000 epoch) | |
| Constellation | Canes Venatici |
| Right ascension | 12h 12.9m [1] |
| Declination | 36° 10′[1] |
| Distance | 2.959 megaparsecs (9.65 Mly) |
| Apparent magnitude (V) | 14.5[1] |
| Characteristics | |
| Type | dIrr[1] |
| Apparent size (V) | 1.9′ × 1.6′[1] |
| Other designations | |
| NGC 4167, UGC 7199, PGC 38881, MCG 6-27-26 | |
References
edit- ^ a b c d e Dunlop, Storm (2005). Atlas of the Night Sky. Collins. ISBN 978-0-00-717223-8.
- ^ "NGC 4163".
- ^ R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN 978-0-521-35299-4.
- ^ Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (May 1992). "Groups of galaxies within 80 Mpc. II. The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211. Bibcode:1992A&AS...93..211F. ISSN 0365-0138.
- ^ Garcia, A. M. (July 1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G. ISSN 0365-0138.
External links
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Media related to NGC 4163 at Wikimedia Commons
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