NGC 6172
| Galaxy NGC 6172 / IC 1213 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Snake |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 16 h 22 m 10.3 s |
| declination | -01 ° 30 ′ 54 ″ |
| Appearance | |
| Morphological type | E0 |
| Brightness (visual) | 12.8 mag |
| Brightness (B-band) | 13.8 mag |
| Angular expansion | 0.8 ′ × 0.8 ′ |
| Surface brightness | 12.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.016708 ± 0.000027 |
| Radial velocity | 5009 ± 8 km / s |
|
Stroke distance v rad / H 0 |
(226 ± 16) x 10 6 ly (69.3 ± 4.9) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | June 21, 1884 |
| Catalog names | |
| NGC 6172 • IC 1213 • UGC 10352 • PGC 57937 • CGCG 024-009 • MCG + 00-42-03 • 2MASX J16221032-0130531 • | |
NGC 6172 = IC 1213 is a 12.8 mag bright elliptical galaxy of the Hubble type E0 in the constellation Snake north of the celestial equator . It is an estimated 226 million light years from the Milky Way and about 55,000 light years in diameter.
In the same area of the sky is u. a. the galaxy NGC 6118 .
The Type Ia supernova SN 2007bj was observed here.
The object was discovered on June 21, 1884 by Édouard Stephan . Due to an error in Stephen's position, the observation by Lewis A. Swift on April 19, 1890 under IC 1213 led to an entry in the index catalog .
Web links
- NGC 6172. SIMBAD , accessed June 14, 2016 .
- NGC 6172. DSO Browser, accessed June 14, 2016 .
- Auke Slotegraaf : NGC 6172. Deep Sky Observer's Companion, accessed June 14, 2016 .