NGC 4045
| Galaxy NGC 4045 |
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![NGC 4045 & PGC 38033 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC4045_-_SDSS_DR14.jpg)
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| NGC 4045 PGC 38033 & SDSS Recording | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 02 m 42.238 s |
| declination | + 01 ° 58 ′ 36.51 ″ |
| Appearance | |
| Morphological type | SAB (r) a / HII / LINER |
| Brightness (visual) | 11.9 likes |
| Brightness (B-band) | 12.8 mag |
| Angular expansion | 2.7 ′ × 1.7 ′ |
| Position angle | 95 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 372 |
| Redshift | 0.006591 ± 0.000010 |
| Radial velocity | 1976 ± 3 km / s |
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Stroke distance v rad / H 0 |
(84 ± 6) · 10 6 ly (25.7 ± 1.8) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | December 20, 1784 |
| Catalog names | |
| NGC 4045 • NGC 4046 • UGC 7021 • PGC 38031 • CGCG 013-046 • MCG + 00-31-022 • IRAS 12001 + 0215 • 2MASX J12024226 + 0158363 • GC 2675 • H II 276 • h 1057 • HIPASS J1202 + 01 • HOLM 320A • WISEA J120242.24 + 015836.2 • EVCC 84 | |
NGC 4045 = NGC 4046 is an active bar-spiral galaxy of the Hubble type SBa with extensive star formation areas in the constellation Virgo in the northern sky . It is an estimated 84 million light years from the Milky Way and about 70,000 light years in diameter. Together with PGC 38033 (also NGC 4045A ) it forms the optical pair of galaxies Holm 320 .
In the same area of the sky are u. a. the galaxies NGC 4063 , NGC 4073 , NGC 4075 , IC 2989 .
The Type Ia supernova SN 1985B was observed here.
The object was discovered on December 20, 1784 by the astronomer Wilhelm Herschel .