NGC 6549
| Galaxy NGC 6549 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Hercules |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 18 h 05 m 49.5 s |
| declination | + 18 ° 32 ′ 17 ″ |
| Appearance | |
| Morphological type | Sbc |
| Brightness (visual) | 14.0 mag |
| Brightness (B-band) | 14.8 mag |
| Angular expansion | 1.4 ′ × 0.4 ′ |
| Position angle | 53 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Redshift | 0.022362 +/- 0.000033 |
| Radial velocity | 6704 +/- 10 km / s |
|
Stroke distance v rad / H 0 |
(307 ± 22) x 10 6 ly (94.1 ± 6.6) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | July 27, 1864 |
| Catalog names | |
| NGC 6549, 6550 • UGC 11114 • PGC 61399 • CGCG 113-019 • MCG + 03-46-012 • IRAS 18036 + 1831 • GC 5892 • | |
NGC 6549 = NGC 6550 is a 14.0 mag bright spiral galaxy of the Hubble type Sbc in the constellation Hercules and about 307 million light years from Earth.
It forms an optical double galaxy with the galaxy NGC 6548, which is only a third that distant, and was discovered by Albert Marth on July 27, 1864 .
The observation of Édouard Stephan on July 19, 1882 led to a second entry in the catalog under NGC 6550 due to a misinterpretation by Dreyer .
Web links
- NGC 6549. SIMBAD, accessed September 7, 2016 .
- NGC 6549. DSO Browser, accessed September 7, 2016 .
- Auke Slotegraaf: NGC 6549. Deep Sky Observer's Companion, accessed on September 7, 2016 (English).