NGC 4245
Galaxy NGC 4245 |
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NGC 4245 SDSS image | |
AladinLite | |
Constellation | Berenike's hair |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 12 h 17 m 36.773 s |
declination | + 29 ° 36 ′ 28.83 ″ |
Appearance | |
Morphological type | SB (r) 0 / a: / HII |
Brightness (visual) | 11.4 mag |
Brightness (B-band) | 12.3 mag |
Angular expansion | 2.9 'x 2.2' |
Position angle | 165 ° |
Surface brightness | 13.3 mag / arcmin² |
Physical data | |
Affiliation |
Coma I group NGC 4062 group LGG 279 |
Redshift | 0.002948 ± 0.000071 |
Radial velocity | 884 ± 21 km / s |
Stroke distance v rad / H 0 |
(39 ± 3) x 10 6 ly (12.1 ± 0.9) Mpc |
history | |
discovery | William Herschel |
Discovery date | March 13, 1785 |
Catalog names | |
NGC 4245 • UGC 7328 • PGC 39437 • CGCG 158-059 • MCG + 05-29-049 • IRAS 12151 + 2952 • 2MASX J12173678 + 2936288 • GC 2832 • H I 74 • h 1168 • GALEX ASC J121736.72 + 293628.4 • WISEA J121736.78 + 293628.7 • LDCE 867 NED096 |
NGC 4245 is a lenticular galaxy of the Hubble type SB0 / a with extensive star formation areas in the constellation Coma Berenices in the northern sky . It is an estimated 39 million light-years from the Milky Way and about 35,000 light-years across. Together with 18 other galaxies, it forms the NGC 4274 group ( LGG 279 ).
In the same area of the sky are u. a. the galaxies NGC 4253 , NGC 4274 , NGC 4278 , IC 779 .
The object was discovered on March 13, 1785 by the astronomer William Herschel with the help of his 18.7 inch telescope.
Web links
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