NGC 7770
| Galaxy NGC 7770 |
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|---|---|
![NGC 7771 (above) & NGC 7770 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC7770_-_SDSS_DR14.jpg)
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| NGC 7771 (above) & NGC 7770 SDSS image | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 23 h 51 m 22.5 s |
| declination | + 20 ° 05 ′ 47 ″ |
| Appearance | |
| Morphological type | S0 / a? / HII |
| Brightness (visual) | 13.6 mag |
| Brightness (B-band) | 14.5 mag |
| Angular expansion | 0.8 ′ × 0.7 ′ |
| Position angle | 17 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 726 NGC 7771 group |
| Redshift | 0.013733 ± 0.000050 |
| Radial velocity | 4117 ± 15 km / s |
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Stroke distance v rad / H 0 |
(191 ± 13) · 10 6 ly (58.7 ± 4.1) Mpc |
| history | |
| discovery | Bindon Stoney / William Parsons |
| Discovery date | November 5, 1850 |
| Catalog names | |
| NGC 7770 • UGC 12813 • PGC 72635 • CGCG 455-057 • MCG + 03-60-034 • KUG 2348 + 198B • 2MASX J23512260 + 2005485 • GC 5021 • LDCE 1598 NED002 • HOLM 820B • KTG 82B | |
NGC 7770 is a lenticular galaxy with extensive star formation regions of the Hubble type S0 / a in the constellation Pegasus in the northern sky . It is estimated to be 191 million light years from the Milky Way and about 40,000 light years in diameter. The galaxy interacts with its larger neighbor NGC 7771 and together with NGC 7769 forms the galaxy trio Holm 820 or KTG 82B and is considered a member of the NGC 7771 group ( LGG 483 ).
The object was discovered on November 5, 1850 by the astronomer Bindon Blood Stoney or by William Parsons , whose assistant Stoney was.
Web links
Commons : NGC 7770 - collection of images, videos, and audio files
- SIMBAD Astronomical Database
- Spektrum .de: amateur recordings [1] , labeled map of the area