NGC 7722
| Galaxy NGC 7722 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 23 h 38 m 41.2 s |
| declination | + 15 ° 57 ′ 17 ″ |
| Appearance | |
| Morphological type | S0 / a / LINER |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.3 mag |
| Angular expansion | 1.7 '× 1.4' |
| Position angle | 150 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 7711 group LGG 477 |
| Redshift | 0.013429 ± 0.000017 |
| Radial velocity | 4026 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(187 ± 13) x 10 6 ly (57.4 ± 4.0) Mpc |
| history | |
| discovery | Heinrich d'Arrest |
| Discovery date | August 12, 1864 |
| Catalog names | |
| NGC 7722 • UGC 12718 • PGC 71993 • CGCG 455-035 • MCG + 03-60-017 • IRAS 23361 + 1540 • 2MASX J23384119 + 1557174 • NVSS J233841 + 155721 • LDCE 1581 NED009 | |
NGC 7722 is a lenticular galaxy with an active nucleus of the Hubble type S0 / a in the constellation Pegasus in the northern sky . It is estimated to be 187 million light years from the Milky Way and about 90,000 light years in diameter.
In the same area of the sky are u. a. the galaxies NGC 7703 and NGC 7711 .
The object was discovered on August 12, 1864 by Heinrich Louis d'Arrest .