NGC 993
| Galaxy NGC 993 / NGC 994 |
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|---|---|
|
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| SDSS recording | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 36 m 46.0 s |
| declination | + 02 ° 03 ′ 02 ″ |
| Appearance | |
| Morphological type | S0- / pec: |
| Brightness (visual) | 13.7 mag |
| Brightness (B-band) | 14.7 mag |
| Angular expansion | 0.9 '× 0.8' |
| Position angle | 110 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.023056 ± 0.000093 |
| Radial velocity | 6912 ± 28 km / s |
|
Stroke distance v rad / H 0 |
(310 ± 22) x 10 6 ly (94.9 ± 6.7) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | January 15, 1865 |
| Catalog names | |
| NGC 993 • NGC 994 • UGC 2095 • PGC 9910 • CGCG 388-063 • MCG + 00-07-052 • 2MASX J02364604 + 0203015 • GALEX ASC J023646.17 + 020301.1 • LDCE 179 NED008 | |
NGC 993 = NGC 994 is an elliptical galaxy of the Hubble type E / S0 in the constellation Whale south of the ecliptic . It is estimated to be 310 million light-years away from the Milky Way and has a diameter of about 65,000 ly
. a. the galaxies NGC 1004 , NGC 1007 , NGC 1008 , IC 241 .
The object was on 15 January 1865 by the astronomer Albert Marth using a 48-inch - telescope discovered. On October 17, 1885, it was discovered independently by Lewis A. Swift , which later led to the catalog entry NGC 994 .