NGC 7553
| Galaxy NGC 7553 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Pegasus |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 15 m 33.0 s |
| declination | + 19 ° 02 ′ 55 ″ |
| Appearance | |
| Morphological type | S0 |
| Brightness (visual) | 14.4 mag |
| Brightness (B-band) | 15.4 mag |
| Angular expansion | 0.4 ′ × 0.4 ′ |
| Surface brightness | 12.3 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 700 |
| Redshift | 0.017255 ± 0.000113 |
| Radial velocity | 5173 ± 34 km / s |
|
Stroke distance v rad / H 0 |
(239 ± 17) · 10 6 ly (73.3 ± 5.2) Mpc |
| history | |
| discovery | Bindon Stoney |
| Discovery date | November 2, 1850 |
| Catalog names | |
| NGC 7553 • PGC 70834 • 70842 • CGCG 454-015 • 2MASX J23153308 + 1902529 • HCG 93D • GALEX MSC J231532.98 + 190253.9 • LDCE 1563 NED005 | |
NGC 7553 is a lenticular galaxy of the Hubble-type S0 in the constellation Pegasus north of the celestial equator . It is estimated to be 239 million light years from the Milky Way and about 30,000 light years across.
In the same area of the sky are u. a. the galaxies NGC 7547 , NGC 7549 , NGC 7550 , NGC 7558 .
The object was discovered on November 2, 1850 by Bindon Blood Stoney , an assistant to William Parsons .