NGC 168
| Galaxy NGC 168 |
|
|---|---|
![NGC 168 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC168_-_SDSS_DR14.jpg)
|
|
| NGC 168 SDSS image | |
| AladinLite | |
| Constellation | whale |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 00 h 36 m 38.66 s |
| declination | -22 ° 35 ′ 36.6 ″ |
| Appearance | |
| Morphological type | S0-? / sp / HII |
| Brightness (visual) | 14.0 mag |
| Brightness (B-band) | 14.9 mag |
| Angular expansion | 1.2 ′ × 0.2 ′ |
| Position angle | 26 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.012980 ± 0.000040 |
| Radial velocity | 3891 ± 12 km / s |
|
Stroke distance v rad / H 0 |
(174 ± 12) · 10 6 ly (53.5 ± 3.8) Mpc |
| history | |
| discovery | Frank Muller |
| Discovery date | 1886 |
| Catalog names | |
| NGC 168 • PGC 2192 • ESO 474-004 • MCG -04-02-026 • IRAS 00341-2251 • 2MASX J00363863-2235367 • SGC 003410-2252.1 • GALEX ASC J003638.74-223534.8 • KTS 4A • NVSS J003639-223543 • WISEA J003638.67-223536.2 | |
NGC 168 is a lenticular galaxy of the Hubble type S0 / a with extensive star formation areas in the constellation Whale south of the celestial equator . It is estimated to be 174 million light years from the Milky Way and about 60,000 light years in diameter . Together with NGC 172 and NGC 177 , it forms the (optical?) Galaxy trio KTS 4 .
In the same area of the sky is u. a. the galaxy NGC 167 .
The object was discovered in 1886 by the American astronomer Frank Muller .