NGC 4789
| Galaxy NGC 4789 |
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|---|---|
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| SDSS | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| 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”.