NGC 1681
| Galaxy NGC 1681 |
|
|---|---|
![NGC 1681 [1] SDSS](https://de.wikipedia.org/wiki/Datei:NGC1681_-_SDSS_DR14.jpg)
|
|
| NGC 1681 SDSS | |
| AladinLite | |
| Constellation | Eridanus |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 04 h 51 m 50.06 s |
| declination | -05 ° 48 ′ 11.6 ″ |
| Appearance | |
| Morphological type | Sb / pec: / HII |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.7 mag |
| Angular expansion | 1.3 ′ × 1.2 ′ |
| Position angle | 142 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Redshift | 0.009176 ± 0.000107 |
| Radial velocity | 2751 ± 32 km / s |
|
Stroke distance v rad / H 0 |
(119 ± 8) · 10 6 ly (36.4 ± 2.6) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | January 6, 1878 |
| Catalog names | |
| NGC 1681 • PGC 16195 • MCG -01-13-026 • IRAS 04493-0553 • 2MASX J04515005-0548115 • LDCE 343 NED006 • NVSS J045150-054812 • WISEA J045150.10-054811.2 | |
NGC 1681 is a spiral galaxy with extensive star formation regions of the Hubble type Sb in the constellation Eridanus in the southern sky . It is estimated to be 119 million light years from the Milky Way and about 45,000 light years across.
In the same area of the sky are u. a. the galaxies IC 2097 , IC 2098 , IC 2101 , IC 2102 .
The object was discovered on January 6, 1878 by Édouard Stephan at the Observatoire de Marseille .
Web links
Commons : NGC 1681 - collection of images, videos, and audio files
