NGC 6640
| Galaxy NGC 6640 |
|
|---|---|
|
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| AladinLite | |
| Constellation | lyre |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 18 h 28 m 08.3 s |
| declination | + 34 ° 18 ′ 10 ″ |
| Appearance | |
| Morphological type | Scd: |
| Brightness (visual) | 13.5 likes |
| Brightness (B-band) | 14.2 mag |
| Angular expansion | 1.10 × 0.8 |
| Position angle | 153 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Redshift | 0.022709 +/- 0.000057 |
| Radial velocity | 6808 +/- 17 km / s |
|
Stroke distance v rad / H 0 |
(313 ± 22) x 10 6 ly (96.0 ± 6.7) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | August 21, 1884 |
| Catalog names | |
| NGC 6640 • UGC 11247 • PGC 61913 • CGCG 200-021 • MCG + 06-40-018 • IRAS 18263 + 3416 • 2MASX J18280824 + 3418096 • LDCE 1303 NED002 | |
NGC 6640 is a spiral galaxy of Hubble type Sc in the constellation Lyra the northern sky . It is estimated to be 313 million light years from the Milky Way and about 100,000 light years in diameter.
The object was discovered by Édouard Stephan on August 21, 1884 .