NGC 4222
| Galaxy NGC 4222 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 16 m 22.5 s |
| declination | + 13 ° 18 ′ 25 ″ |
| Appearance | |
| Morphological type | Sc / HII |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 3.1 '× 0.5' |
| Position angle | 56 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo cluster? |
| Redshift | 0.000767 +/- 0.000003 |
| Radial velocity | (230 +/- 1) km / s |
|
Stroke distance v rad / H 0 |
(75 ± 17) x 10 6 ly (23.0 ± 5.2) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 8, 1784 |
| Catalog names | |
| NGC 4222 • UGC 7291 • PGC 39308 • CGCG 069-119 • MCG + 02-31-075 • IRAS 12138 + 1334 • 2MASX J12162252 + 1318254 • VCC 187 • GC 2814 • H II-109 • FGC 1396 • LDCE 904 NED026 | |
NGC 4222 is a spiral dwarf galaxy with extensive star formation regions of the Hubble-type Scd in the constellation Coma Berenices in the northern sky . It is estimated to be 75 million light years away from the Milky Way and has a diameter of around 65,000 ly. Under catalog number VCC 131 belongs to the Virgo galaxy cluster .
In the same area of the sky are u. a. the galaxies NGC 4216 , IC 771 , IC 3066 , IC 3108 .
The object was discovered on April 8, 1784 by the astronomer William Herschel .