NGC 6447
| Galaxy NGC 6447 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Hercules |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 17 h 46 m 17.2 s |
| declination | + 35 ° 34 ′ 19 ″ |
| Appearance | |
| Morphological type | SBbc |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.7 mag |
| Angular expansion | 1.6 ′ × 0.9 ′ |
| Position angle | 145 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.022462 +/- 0.000050 |
| Radial velocity | 6734 +/- 15 km / s |
|
Stroke distance v rad / H 0 |
(309 ± 22) x 10 6 ly (94.8 ± 6.6) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | July 9, 1864 |
| Catalog names | |
| NGC 6447 • UGC 10975 • PGC 60829 • CGCG 199-019 • MCG + 06-39-019 • IRAS 17445 + 3535 • 2MASX J17461724 + 3534189 • GC 5877 • | |
NGC 6447 is a 12.9 mag light barred spiral galaxy of the Hubble type SBbc in the constellation Hercules . It is estimated to be 309 million light years from the Milky Way and forms a gravitationally bound double galaxy with NGC 6446
The object was discovered by Albert Marth on July 9, 1864 .
Web links
- NGC 6447. SIMBAD, accessed August 1, 2016 .
- NGC 6447. DSO Browser, accessed August 1, 2016 .
- Auke Slotegraaf: NGC 6447. Deep Sky Observer's Companion, accessed August 1, 2016 .