NGC 4622
| Galaxy NGC 4622 |
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|---|---|
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| The galaxy NGC 4622 imaged by the Hubble Space Telescope | |
| AladinLite | |
| Constellation | centaur |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 42 m 37.6 s |
| declination | -40 ° 44 ′ 39 ″ |
| Appearance | |
| Morphological type | (R ') SA (r) a / pec |
| Brightness (visual) | 12.5 mag |
| Brightness (B-band) | 13.4 mag |
| Angular expansion | 1.7 ′ × 1.6 ′ |
| Position angle | 173 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Affiliation | CEN 45 LGG 305 |
| Redshift | 0.014567 ± 0.000130 |
| Radial velocity | 4367 ± 39 km / s |
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Stroke distance v rad / H 0 |
(187 ± 13) · 10 6 ly (57.4 ± 4.1) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | June 5, 1834 |
| Catalog names | |
| NGC 4622 • PGC 42701 • ESO 322-57 • MCG -07-26-031 • 2MASX J12423762-4044394 • SGC 123954-4028.2 • GC 3156 • h 3409 • AM 1239-402 • LDCE 916 NED055 | |
NGC 4622 is a spiral galaxy of Hubble type Sa in the constellation Centaurus in the southern sky . It is estimated to be 187 million light years from the Milky Way and about 95,000 light years in diameter.
In the same area of the sky are u. a. the galaxies NGC 4601 , NGC 4603 , NGC 4616 , NGC 4650 .
As American astronomers have discovered, the galaxy rotates with its spiral arms ahead, which is a rarity in the universe . Because normally the galaxies drag their spiral arms behind them. Inside this galaxy there is also a spiral arm that behaves normally. This peculiar behavior probably stems from a collision with another galaxy.
The supernova SN 2001jx was observed here.
The object was discovered on June 5, 1834 by the British astronomer John Herschel .
Trivia
NGC 4622 plays an important role in the science fiction series Perry Rhodan in volumes 2900–2999. The galaxy is named Sevcooris in the series ; the distance is given as 111 million light years.
Web links
- SIMBADAstronomical Database
- Hubble Space Telescope
- Hubble Heritage Project (German)
- Astronomie.de
- Galaxy evolution (PDF file; 1.80 MB)