NGC 6917
| Galaxy NGC 6917 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | dolphin |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 20 h 27 m 28.3 s |
| declination | + 08 ° 05 ′ 53 ″ |
| Appearance | |
| Morphological type | S. |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.1 mag |
| Angular expansion | 1.4 '× 1.0' |
| Position angle | 40 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.015651 ± 0.000020 |
| Radial velocity | 4692 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(218 ± 15) x 10 6 ly (66.7 ± 4.7) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | August 15, 1863 |
| Catalog names | |
| NGC 6917 • UGC 11563 • PGC 64715 • CGCG 399-010 • MCG + 01-52-007 • 2MASX J20272835 + 0805531 • NVSS J202728 + 080554 • LDCE 1398 NED005 | |
NGC 6917 is a spiral galaxy of Hubble type S in the constellation dolphin on southern sky . It is estimated to be 218 million light years from the Milky Way and about 90,000 light years in diameter.
The object was discovered by Albert Marth on August 15, 1863 .