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 |
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 |
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.