NGC 4455
| Galaxy NGC 4455 |
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|---|---|
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| Image of the spiral galaxy NGC 4455 with the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 28 m 44.1 s |
| declination | + 22 ° 49 ′ 14 ″ |
| Appearance | |
| Morphological type | SB (s) d? / sp |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.0 likes |
| Angular expansion | 2.6 'x 0.8' |
| Position angle | 16 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.002125 +/- 0.000013 |
| Radial velocity | 637 +/- 4 km / s |
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Stroke distance v rad / H 0 |
(28 ± 2) x 10 6 ly (8.46 ± 0.59) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 10, 1785 |
| Catalog names | |
| NGC 4455 • UGC 7603 • PGC 41066 • CGCG 129-002 • MCG + 04-30-001 • IRAS F12262 + 2305 • KUG 1226 + 231 • GC 3006 • H II 355 • h 1285 • | |
NGC 4455 is a bar-spiral dwarf galaxy of the Hubble type SBcd in the constellation Coma Berenices in the northern sky . It is estimated to be 28 million light years away from the Milky Way and has a diameter of around 20,000 ly.
In the same area of the sky are the galaxies IC 791 , IC 795 , IC 3359 , IC 3429 .
The object was discovered by Wilhelm Herschel on April 10, 1785 .