NGC 7821
| Galaxy NGC 7821 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 00 h 05 m 16.7 s |
| declination | -16 ° 28 ′ 37 ″ |
| Appearance | |
| Morphological type | Scd / pec / sp |
| Brightness (visual) | 13.3 mag |
| Brightness (B-band) | 14.0 mag |
| Angular expansion | 1.4 '× 0.5' |
| Position angle | 111 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.024724 ± 0.000033 |
| Radial velocity | 7412 ± 10 km / s |
|
Stroke distance v rad / H 0 |
(334 ± 23) x 10 6 ly (102.3 ± 7.2) Mpc |
| history | |
| discovery | Ormond Stone |
| Discovery date | November 3, 1885 |
| Catalog names | |
| NGC 7821 • PGC 367 • MCG -03-01-019 • IRAS 00027-1645 • 2MASX J00051672-1628368 • GALEX ASC J000516.75-162836.2 | |
NGC 7821 is a spiral galaxy of Hubble type Sc in the constellation Cetus south of the ecliptic . It is estimated to be 334 million light years from the Milky Way and about 140,000 light years in diameter .
The object was discovered by Ormond Stone on November 3, 1885 .