NGC 7768
| Galaxy NGC 7768 |
|
|---|---|
![NGC 7765, NGC 7768, NGC 7766 (v. O. N. U.) [1]](https://de.wikipedia.org/wiki/Datei:NGC7768_-_SDSS_DR14.jpg)
|
|
| NGC 7765, NGC 7768, NGC 7766 (v. O. N. U.) | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 50 m 58.6 s |
| declination | + 27 ° 08 ′ 51 ″ |
| Appearance | |
| Morphological type | cD; E |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.2 mag |
| Angular expansion | 1.6 '× 1.3' |
| Position angle | 60 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | Abell 2666 WBL 724 |
| Redshift | 0.027322 ± 0.000053 |
| Radial velocity | 8191 ± 16 km / s |
|
Stroke distance v rad / H 0 |
(374 ± 26) x 10 6 ly (114.7 ± 8.0) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | September 5, 1828 |
| Catalog names | |
| NGC 7768 • UGC 12806 • PGC 72605 • CGCG 477-019 • MCG + 04-56-018 • 2MASX J23505859 + 2708507 • SDSS J235058.55 + 270850.4 • LDCE 1595 NED009 • HOLM 818A | |
NGC 7768 is an elliptical cD galaxy of the Hubble type E2 in the constellation Pegasus in the northern sky . It is estimated to be 374 million light years from the Milky Way and about 175,000 light years across. Together with NGC 7765 , NGC 7766 and NGC 7767 , it forms the galaxy group Holm 818 .
The supernova SN 1968Z was observed here.
The object was discovered by John Herschel on September 5, 1828 .