NGC 5204
| Galaxy NGC 5204 |
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|---|---|
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 13 h 29 m 36.5 s |
| declination | + 58 ° 25 ′ 07 ″ |
| Appearance | |
| Morphological type | SA (s) m / HII |
| Brightness (visual) | 11.1 mag |
| Brightness (B-band) | 11.7 mag |
| Angular expansion | 5 ′, 0 × 3 ′, 0 |
| Position angle | 5 ° |
| Surface brightness | 13.9 mag / arcmin² |
| Physical data | |
| Affiliation |
M81 group ? Canes ‑ Venatici ‑ I group ? M101 group? Virgo superclusters |
| Redshift | 0.000670 ± 0.000003 |
| Radial velocity | (201 ± 1) km / s |
|
Stroke distance v rad / H 0 |
(14 ± 1) x 10 6 ly (4.35 ± 0.31) Mpc |
| diameter | 15,000 ly |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 24, 1789 |
| Catalog names | |
| NGC 5204 • UGC 8490 • PGC 47368 • CGCG 294-039 • MCG + 10-19-078 • IRAS 13277 + 5840 • 2MASX J13293650 + 5825074 • GC 3579 • H IV 63 • h 1625 • | |
NGC 5204 is a spiral galaxy in the constellation Great Bear , approximately 14 million light years from the Milky Way . Its morphological type SA (s) m describes that it is an irregular spiral galaxy of the magellanic type , i.e. that is, it has no pronounced central bulge and only one spiral arm, similar to the Large Magellanic Cloud . An assignment of the galaxy to a galaxy group has so far not been clearly successful because it is located in the vicinity of different groups.
NGC 5204 was discovered on April 24, 1789 by the German-British astronomer Wilhelm Herschel .