NGC 4923
| Galaxy NGC 4923 |
|
|---|---|
|
|
| Image of the galaxy NGC 4923 with the help of the 81 cm reflecting telescope of the Mount Lemmon Observatory | |
| AladinLite | |
| Constellation | Berenike's hair |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 01 m 31.8 s |
| declination | + 27 ° 50 ′ 51 ″ |
| Appearance | |
| Morphological type | (R ') SA (r) 0-? |
| Brightness (visual) | 13.7 mag |
| Brightness (B-band) | 14.7 mag |
| Angular expansion | 0.8 ′ × 0.8 ′ |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | Coma Galaxy Cluster Abell 1656 |
| Redshift | 0.018293 +/- 0.000028 |
| Radial velocity | 5484 +/- 8 km / s |
|
Stroke distance v rad / H 0 |
(246 ± 17) · 10 6 ly (75.3 ± 5.3) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 11, 1785 |
| Catalog names | |
| NGC 4923 • PGC 44903 • CGCG 160-097 • MCG + 05-31-101 • GC 3369 • H II 394 • h 1518 • LDCE 0926 NED063 | |
NGC 4923 is a 13.7 mag bright lenticular galaxy of the Hubble type E-SB0 in the constellation Haar der Berenike , about 246 million light years away from the Milky Way. It belongs to the Coma galaxy cluster and was discovered on April 11, 1785 by Wilhelm Herschel with an 18.7-inch reflector telescope, which “Three. The two following are pretty near each other. The sp about 8 ′ distant ”noted. The other two objects are NGC 4911 and NGC 4921 ; a fourth object in this group, NGC 4919 , was only discovered by Heinrich Louis d'Arrest in 1864 .