NGC 6442
| Galaxy NGC 6442 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Hercules |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 17 h 46 m 51.3 s |
| declination | + 20 ° 45 ′ 40 ″ |
| Appearance | |
| Morphological type | E1 |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.8 ′ × 1.6 ′ |
| Position angle | 120 ° |
| Surface brightness | 14.6 mag / arcmin² |
| Physical data | |
| Redshift | 0.021208 +/- 0.000073 |
| Radial velocity | 6358 +/- 22 km / s |
|
Stroke distance v rad / H 0 |
(291 ± 21) · 10 6 ly (89.3 ± 6.3) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | June 2, 1864 |
| Catalog names | |
| NGC 6442 • UGC 10978 • PGC 60844 • CGCG 112-038 • MCG + 03-45-021 • 2MASX J17465074 + 2045440 • GC 5875 • | |
NGC 6442 is a 13.4 likes bright elliptical galaxy from the Hubble type E1 in the constellation Hercules , an estimated 291 million light-years from the Milky Way 's center.
The object was discovered by Albert Marth on June 2, 1864 .
Web links
- NGC 6442. SIMBAD, accessed August 1, 2016 .
- NGC 6442. DSO Browser, accessed August 1, 2016 .
- Auke Slotegraaf: NGC 6442. Deep Sky Observer's Companion, accessed August 1, 2016 .