NGC 4654
| Galaxy NGC 4654 & IC 3708 |
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|---|---|
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| Photo from the 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 43 m 56.6 s |
| declination | + 13 ° 07 ′ 36 ″ |
| Appearance | |
| Morphological type | SAB (rs) cd / HII |
| Brightness (visual) | 10.4 mag |
| Brightness (B-band) | 11.1 mag |
| Angular expansion | 5 ′, 0 × 3 ′, 1 |
| Position angle | 128 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo cluster Messier 87 group NGC 4639 group NGC 4472 group LGG 292 |
| Redshift | +0.003452 ± 0.000027 |
| Radial velocity | +1033 ± 8 km / s |
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Stroke distance v rad / H 0 |
(45 ± 3) x 10 6 ly (13.7 ± 1.0) Mpc |
| diameter | 75,000 ly |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 12, 1784 |
| Catalog names | |
| NGC 4654 • IC 3708 • UGC 7902 • PGC 42857 • CGCG 071-019 • MCG + 02-33-004 • IRAS 12414 + 1324 • 2MASX J12435663 + 1307348 • VCC 1987 • GC 3187 • H II-126 • h 1411 • HIPASS J1243 + 13b • LDCE 904 NED239 • EVCC 1109 | |
NGC 4654 is a bar-spiral galaxy with extensive star formation areas of the Hubble type SBcd in the constellation Virgo north of the ecliptic . It is an estimated 45 million light years from the Milky Way and about 70,000 light years across. It is listed as a member of the Virgo galaxy cluster under catalog number VCC 1987 .
In the same area of the sky are u. a. the galaxies NGC 4620 , NGC 4639 , NGC 4659 , IC 3742 .
The object was discovered on April 12, 1784 by the German-British astronomer Wilhelm Herschel .
IC 3708 describes an H-II region in this galaxy, which the astronomer Arnold Schwassmann discovered on September 18, 1900 and received an entry in the index catalog .
Web links
Commons : NGC 4654 - collection of images, videos, and audio files
