NGC 6923
| Galaxy NGC 6923 / IC 5004 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | microscope |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 20 h 31 m 39.1 s |
| declination | -30 ° 49 ′ 55 ″ |
| Appearance | |
| Morphological type | SB (rs) b |
| Brightness (visual) | 11.9 likes |
| Brightness (B-band) | 12.7 mag |
| Angular expansion | 2.60 × 1.3 |
| Position angle | 78 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.009427 ± 0.000010 |
| Radial velocity | (2826 ± 3) km / s |
|
Stroke distance v rad / H 0 |
(128 ± 9) · 10 6 ly (39.3 ± 2.8) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | July 31, 1834 |
| Catalog names | |
| NGC 6923 • IC 5004 • PGC 64884 • ESO 462-029 • MCG -05-48-017 • IRAS 20285-3100 • 2MASX J20313906-3049549 • SGC 202833-3100.2 • | |
NGC 6923 = IC 5004 is a bar-spiral galaxy of the Hubble type SBb in the microscope constellation in the southern sky . It is estimated to be 128 million light years from the Milky Way .
The object was discovered by John Herschel on July 31, 1834 .