NGC 7784
| Galaxy NGC 7784 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Pegasus |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 55 m 13.7 s |
| declination | + 21 ° 45 ′ 44 ″ |
| Appearance | |
| Morphological type | C. |
| Brightness (visual) | 14.5 mag |
| Brightness (B-band) | 15.5 mag |
| Angular expansion | 0.50 × 0.5 |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.026185 +/- 0.000110 |
| Radial velocity | 7850 +/- 33 km / s |
|
Stroke distance v rad / H 0 |
(358 ± 25) x 10 6 ly (109.8 ± 7.7) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | October 1, 1883 |
| Catalog names | |
| NGC 7784 • PGC 72862 • CGCG 477-029 • MCG + 04-01-001 • 2MASX J23551365 + 2145438 • GALEX ASC J235513.51 + 214545.1 | |
NGC 7784 is a compact galaxy of Hubble type C in the constellation Pegasus at the northern sky . It is estimated to be 358 million light years away from the Milky Way and has a diameter of around 50,000 ly.
The galaxy NGC 7786 is located in the same area of the sky .
The object was discovered on October 1, 1883 by the French astronomer Édouard Stephan .