NGC 813
| Galaxy NGC 813 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Little water snake |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 01 m 36.1 s |
| declination | -68 ° 26 ′ 21 ″ |
| Appearance | |
| Morphological type | SA (s) 0 ^ - |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.8 mag |
| Angular expansion | 1.3 ′ × 0.9 ′ |
| Position angle | 99 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.026992 ± 0.000063 |
| Radial velocity | 8092 ± 19 km / s |
|
Stroke distance v rad / H 0 |
(355 ± 25) x 10 6 ly (108.8 ± 7.6) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | November 24, 1834 |
| Catalog names | |
| NGC 813 • PGC 7692 • ESO 052-016 • 2MASX J02013611-6826209 • SGC 020029-6840.9 • GC 486 • h 2459 • GALEX ASC J020135.80-682619.6 | |
NGC 813 is a lenticular galaxy of the Hubble type SB0 / a in the constellation Little Water Snake in the southern sky . It is estimated to be 355 million light-years away from the Milky Way and has a diameter of about 140,000 ly.
In the same area of the sky there is u. a. the galaxy NGC 802 .
The object was discovered on November 24, 1834 by the British astronomer John Herschel .
Web links
- SIMBAD Astronomical Database
- Auke Slotegraaf: NGC 813. Deep Sky Observer's Companion, accessed on March 25, 2016 .
- NGC 813. DSO Browser, accessed March 25, 2016 .