NGC 821
Galaxy NGC 821 |
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NGC 821 | |
AladinLite | |
Constellation | Aries |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 02 h 08 m 21.14 s |
declination | + 10 ° 59 ′ 41.7 ″ |
Appearance | |
Morphological type | E6? |
Brightness (visual) | 10.8 mag |
Brightness (B-band) | 11.8 mag |
Angular expansion | 2.4 ′ × 1.7 ′ |
Position angle | 25 ° |
Surface brightness | 12.4 mag / arcmin² |
Physical data | |
Affiliation | isolated |
Redshift | 0.005787 ± 0.000014 |
Radial velocity | 1735 ± 4 km / s |
Stroke distance v rad / H 0 |
(80 ± 6) · 10 6 ly (24.6 ± 1.7) Mpc |
history | |
discovery | Wilhelm Herschel |
Discovery date | September 4, 1786 |
Catalog names | |
NGC 821 • UGC 1631 • PGC 8160 • CGCG 438-033 • MCG + 02-06-034 • 2MASX J02082114 + 1059415 • GC 487 • H I 152 • h 193 • 2MASS J02082113 + 1059417 • KIG 89 |
NGC 821 is an elliptical galaxy of Hubble type E6 in the constellation Aries on the ecliptic . It is estimated to be 80 million light-years from the Milky Way and about 55,000 light-years across.
The object was discovered by Wilhelm Herschel on September 4, 1786 .