NGC 493
| Galaxy NGC 493 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 01 h 22 m 09.0 s |
| declination | + 00 ° 56 ′ 43 ″ |
| Appearance | |
| Morphological type | SAB (s) cd: |
| Brightness (visual) | 12.2 mag |
| Brightness (B-band) | 12.9 mag |
| Angular expansion | 3.4 ′ × 1.1 ′ |
| Position angle | 58 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Affiliation | Abell 194 |
| Redshift | 0.007799 ± 0.000017 |
| Radial velocity | 2329 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(107 ± 8) · 10 6 ly (32.9 ± 2.3) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | December 20, 1786 |
| Catalog names | |
| NGC 493 • UGC 914 • PGC 4979 • CGCG 385-084 • MCG + 00-04-099 • IRAS 01195 + 0041 • 2MASX J01220898 + 0056432 • GC 281 • H III 594 • h 105 • | |
NGC 493 is a barred spiral galaxy of the Hubble type SBc in the constellation Whale south of the ecliptic . It is an estimated 107 million light years away from the Milky Way and has a diameter of around 105,000 ly.
In the same area of the sky are the galaxies NGC 521 , IC 1681 , IC 1694 , IC 1697 .
The supernovae SN 1971S (Type-IIP) and SN 2016hgm (Type-IIP) were observed here.
The object was discovered on December 20, 1786 by the German-British astronomer Wilhelm Herschel .
Web links
Commons : NGC 493 - collection of images, videos, and audio files
