NGC 7421
| Galaxy NGC 7421 |
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|---|---|
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | crane |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 22 h 56 m 54.3 s |
| declination | -37 ° 20 ′ 50 ″ |
| Appearance | |
| Morphological type | SB (r) bc |
| Brightness (visual) | 11.7 mag |
| Brightness (B-band) | 12.5 mag |
| Angular expansion | 2.00 × 1.9 |
| Position angle | 78 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Affiliation | IC 1459 group LGG 466 |
| Redshift | 0.005979 ± 0.000029 |
| Radial velocity | 1792 ± 9 km / s |
|
Stroke distance v rad / H 0 |
(80 ± 6) · 10 6 ly (24.6 ± 1.7) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | August 30, 1834 |
| Catalog names | |
| NGC 7421 • PGC 70083 • ESO 346-017 • MCG -06-50-015 • IRAS 22541-3736 • 2MASX J22565431-3720499 • SGC 225406-3736.9 • AM 2254-373 • LDCE 1547 NED006 | |
NGC 7421 is a barred spiral galaxy of the Hubble type SBbc in the constellation Crane in the southern sky . It is estimated to be 80 million light-years from the Milky Way and about 45,000 light-years across.
The galaxies NGC 7418 , IC 1459 , IC 5264 , IC 5273 are located in the same area of the sky .
The object was discovered on August 30, 1834 by John Herschel with his 18.7 inch reflector telescope and later added by Johan Dreyer to his New General Catalog .