NGC 997
| Galaxy NGC 997 |
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|---|---|
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| SDSS image of NGC 997 & NGC 998 (above) | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 02 h 37 m 14.5 s |
| declination | + 07 ° 18 ′ 28 ″ |
| Appearance | |
| Morphological type | E + C |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.1 ′ × 1.1 ′ |
| Surface brightness | 13.7 mag / arcmin² |
| Physical data | |
| Redshift | 0.021695 +/- 0.000140 |
| Radial velocity | 6504 +/- 42 km / s |
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Stroke distance v rad / H 0 |
(292 ± 21) · 10 6 ly (89.6 ± 6.3) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | November 10, 1863 |
| Catalog names | |
| NGC 997 • UGC 2102 • PGC 9932 • CGCG 414-027 • MCG + 01-07-016 • IRAS 02345-0705 • NPM1G +07.0083 | |
NGC 997 is the name of an interacting galaxy pair in the constellation Whale in the New General Catalog . It is an estimated 292 million light years from the Milky Way .
The object was on 10 November 1863 by Albert Marth using a 48-inch - telescope discovered.