Messier Index/M91
| Messier 91 | |
|---|---|
 Spiral Galaxy M91. Atlas Image courtesy of 2MASS/UMass/IPAC-Caltech/NASA/NSF. | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 35m 26.4s[1] |
| Declination | +14° 29′ 47″[1] |
| Redshift | 486 ± 4 km/s[1] |
| Distance | 63 ± 16 Mly (19 ± 5 Mpc)[2] |
| Type | SBb(rs)[1] |
| Apparent dimensions (V) | 5′.4 × 4′.3[1] |
| Apparent magnitude (V) | 11.0[1] |
| Other designations | |
| NGC 4548,[1] UGC 7753,[1] PGC 41934[1] | |
Messier 91 (also known as NGC 4548) is a barred spiral galaxy about 63 million light-years away in the constellation Coma Berenices. It was most probably discovered by Charles Messier in 1781 and independently rediscovered by William Herschel on April 8, 1784. M91 is a member of the Virgo Cluster of galaxies.
External links
References
- ↑ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 4548. Retrieved 2006-12-13.
- ↑ J. L. Tonry, A. Dressler, J. P. Blakeslee, E. A. Ajhar, A. B. Fletcher, G. A. Luppino, M. R. Metzger, C. B. Moore (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal. 546 (2): 681–693. doi:10.1086/318301.
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