NGC 4789
Galaxy NGC 4789 |
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SDSS | |
AladinLite | |
Constellation | Berenike's hair |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 12 h 54 m 19.0 s |
declination | + 27 ° 04 ′ 05 ″ |
Appearance | |
Morphological type | SA0: / PAS |
Brightness (visual) | 12.1 mag |
Brightness (B-band) | 13.1 mag |
Angular expansion | 1.9 ′ × 1.5 ′ |
Position angle | 171 ° |
Surface brightness | 13.1 mag / arcmin² |
Physical data | |
Affiliation | Abell 1656 |
Redshift | 0.027903 +/- 0.000033 |
Radial velocity | 8365 +/- 10 km / s |
Stroke distance v rad / H 0 |
(374 ± 26) x 10 6 ly (114.7 ± 8.0) Mpc |
history | |
discovery | Wilhelm Herschel |
Discovery date | April 6, 1785 |
Catalog names | |
NGC 4789 • UGC 8028 • PGC 43895 • CGCG 159-109, 160-004 • MCG + 05-30-124 • 2MASX J12541900 + 2704051 • GC 3298 • H II 345 • h 1473 • |
NGC 4789 is a 12.1 mag bright, lens-shaped galaxy of the Hubble-type S0 in the constellation Haar der Berenike . It is estimated to be 374 million light years away from the Milky Way and has a diameter of around 215,000 ly.
In the same area of the sky is the galaxy NGC 4787 .
The object was discovered on April 6, 1785 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as “just south of a pretty bright star”.