NGC 4561
| Galaxy NGC 4561 / IC 3569 |
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| Image of the spiral galaxy NGC 4561 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 36 m 08.2 s |
| declination | + 19 ° 19 ′ 22 ″ |
| Appearance | |
| Morphological type | SB (rs) dm |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.1 mag |
| Angular expansion | 1.50 ′ × 1.3 ′ |
| Position angle | 30 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 289 |
| Redshift | 0.004677 ± 0.000003 |
| Radial velocity | 1402 ± 1 km / s |
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Stroke distance v rad / H 0 |
(61 ± 4) · 10 6 ly (18.8 ± 1.3) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 27, 1785 |
| Catalog names | |
| NGC 4561 • IC 3569 • UGC 7768 • PGC 42020 • CGCG 099-098 • MCG + 03-32-76 • IRAS 12336 + 1935 • KUG 1233 + 195 • 2MASX J12360813 + 1919213 • VV 571 • GC 3104 • H II 407 • h 1355 • KPG 346A, LDCE 0904 NED197 | |
NGC 4561 = IC 3569 is a bar-spiral galaxy of the Hubble type SBcd in the constellation Haar der Berenike in the northern sky . It is estimated to be 61 million light years from the Milky Way and about 25,000 light years across.
The galaxy IC 3605 is located in the same area of the sky .
The object was discovered on April 27, 1785 by the astronomer William Herschel using his 18.7-inch mirror telescope. It is very likely that entry IC 3569 in the index catalog also refers to this galaxy.