NGC 4424
| Galaxy NGC 4424 |
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|---|---|
![NGC 4424 with IC 3366 [1] Hubble space telescope](https://upload.wikimedia.org/wikipedia/commons/thumb/5/54/Potw1508a.tif/lossy-page1-300px-Potw1508a.tif.jpg)
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| NGC 4424 with IC 3366 Hubble Space Telescope | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 27 m 11.611 s |
| declination | + 09 ° 25 ′ 14.41 ″ |
| Appearance | |
| Morphological type | SB (s) a: / HII |
| Brightness (visual) | 11.4 mag |
| Brightness (B-band) | 12.3 mag |
| Angular expansion | 3.5 ′ × 1.7 ′ |
| Position angle | 95 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo cluster NGC 4442 group LGG 288 |
| Redshift | 0.001458 ± 0.000007 |
| Radial velocity | 437 ± 2 km / s |
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Stroke distance v rad / H 0 |
(17 ± 1) x 10 6 ly (5.1 ± 0.36) Mpc |
| diameter | 50,000 ly |
| history | |
| discovery | Heinrich d'Arrest |
| Discovery date | February 27, 1865 |
| Catalog names | |
| NGC 4424 • UGC 7561 • PGC 40809 • CGCG 070-090 • MCG + 02-32-58 • IRAS 12246 + 0941 • 2MASX J12271158 + 0925138 • VCC 979 • GC 5648 • GALEX ASC J122711.73 + 092514.2 • LDCE 904 NED118 • EVCC 644 | |
NGC 4424 is a barred spiral galaxy of the Hubble type SBa in the constellation Virgo on the ecliptic . It is an estimated 17 million light-years from the Milky Way and about 20,000 light-years across .
The object is a so-called edge-on galaxy , i. H. we see them exactly at the edge. The spiral arms appear here only as dark dusty clouds, illuminated by the bright center of the galaxy. Furthermore, it is classified as a starburst galaxy , here new stars are emerging at an unusually high rate, the trigger for this could be the proximity of the galaxy IC 3366 .
Together with twelve other galaxies, it forms the NGC 4442 group ( LGG 288 ) and is listed as a member of the Virgo galaxy cluster under catalog number VCC 979 .
In the same area of the sky are u. a. the galaxies NGC 4417 , NGC 4445 , IC 3350 , IC 3366 .
The supernovae SN 1895A and SN 2012cg ( Type Ia ) were observed here.
The object was discovered on February 27, 1865 by the astronomer Heinrich d'Arrest with a 28 cm telescope.