NGC 6899
| Galaxy NGC 6899 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | telescope |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 20 h 24 m 22.3 s |
| declination | -50 ° 26 ′ 01 ″ |
| Appearance | |
| Morphological type | SAB (rs) bc |
| Brightness (visual) | 12.6 mag |
| Brightness (B-band) | 13.4 mag |
| Angular expansion | 1.7 ′ × 1 ′ |
| Position angle | 112 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Redshift | 0.019117 ± 0.000033 |
| Radial velocity | 5731 ± 10 km / s |
|
Stroke distance v rad / H 0 |
(254 ± 18) · 10 6 ly (78 ± 5.5) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | July 24, 1835 |
| Catalog names | |
| NGC 6899 • PGC 64630 • ESO 234-22 • IRAS 20207-5035 • 2MASX J20242223-5026023 • SGC 202042-5035.7 • GALEXASC J202422.40-502603.8 | |
NGC 6899 is a bar-spiral galaxy of the Hubble-type SBbc? in the constellation Telescope in the southern sky . It is estimated to be 254 million light years from the Milky Way and about 130,000 light years in diameter .
The object was discovered by John Herschel on July 24, 1835 .