NGC 5239
| Galaxy NGC 5239 |
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|---|---|
![NGC 5239 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC5239_-_SDSS_DR14.jpg)
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| NGC 5239 SDSS image | |
| AladinLite | |
| Constellation | Bear keeper |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 13 h 36 m 26.203 s |
| declination | + 07 ° 22 ′ 10.53 ″ |
| Appearance | |
| Morphological type | SB (rs) bc / LINER |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.2 mag |
| Angular expansion | 1.8 ′ × 1.2 ′ |
| Position angle | 13 ° |
| Surface brightness | 14.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.023491 ± 0.000023 |
| Radial velocity | 7042 ± 7 km / s |
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Stroke distance v rad / H 0 |
(313 ± 22) x 10 6 ly (96.1 ± 6.7) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 13, 1784 |
| Catalog names | |
| NGC 5239 • UGC 8589 • PGC 48023 • CGCG 045-040 • MCG + 01-35-015 • IRAS 13339 + 0737 • 2MASX J13362618 + 0722109 • GC 3608 • H III 101 • h 1646 • HIPASS J1336 + 07 • LDCE 989 NED007 • WISEA J133626.19 + 072210.8 | |
NGC 5239 is a 13.4 mag bright bar spiral galaxy of the Hubble type SBbc with an active galaxy core in the constellation Bear Guardian in the northern sky . It is estimated to be 313 million light years from the Milky Way and about 165,000 light years in diameter.
In the same area of the sky are u. a. the galaxies NGC 5209 , NGC 5210 , NGC 5212 , NGC 5235 .
The object was discovered on April 13, 1784 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "eF, pL, R, easily resolvable, the stars almost visible".