NGC 5123
| Galaxy NGC 5123 |
|
|---|---|
|
|
| SDSS | |
| AladinLite | |
| Constellation | Hunting dogs |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 23 m 10.5 s |
| declination | + 43 ° 05 ′ 10 ″ |
| Appearance | |
| Morphological type | Scd: |
| Brightness (visual) | 12.8 mag |
| Brightness (B-band) | 13.5 likes |
| Angular expansion | 1.3 ′ × 1.1 ′ |
| Position angle | 174 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Redshift | 0.027546 ± 0.000093 |
| Radial velocity | 8258 ± 28 km / s |
|
Stroke distance v rad / H 0 |
(372 ± 26) x 10 6 ly (114.1 ± 8.0) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 9, 1787 |
| Catalog names | |
| NGC 5123 • UGC 8415 • PGC 46767 • CGCG 218-006 • MCG + 07-28-005 • IRAS 13209 + 4320 • 2MASX J13231050 + 4305108 • GC 3520 • H II 666 • h 1594 • | |
NGC 5123 is a 13.7 likes bright spiral radio galaxy from the Hubble type Sc in the constellation Canes Venatici on the northern sky . It is an estimated 372 million light years away from the Milky Way and has a diameter of about 145,000 ly.
In the same area of the sky there are u. a. the galaxies NGC 5103 and NGC 5145 .
The type II supernova SN 2008dz was observed here.
The object was discovered on April 9, 1787 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "pB, S, iR, mbM".