NGC 5923
| Galaxy NGC 5923 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Bear keeper |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 15 h 21 m 14.2 s |
| declination | + 41 ° 43 ′ 33 ″ |
| Appearance | |
| Morphological type | SAB (s) bc |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.7 mag |
| Angular expansion | 1.8 ′ × 1.8 ′ |
| Surface brightness | 14.0 mag / arcmin² |
| Physical data | |
| Redshift | 0.018573 ± 0.000030 |
| Radial velocity | (5568 ± 9) km / s |
|
Stroke distance v rad / H 0 |
(254 ± 18) x 10 6 ly (78.0 ± 5.5) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | May 1, 1828 |
| Catalog names | |
| NGC 5923 • UGC 9823 • PGC 54780 • CGCG 222-002, 221-052 • MCG + 07-32-01 • IRAS 15194 + 4154 • GC 4099 • h 1921 • LDCE 1113 NED004 | |
NGC 5923 is a 12.9 mag barred spiral galaxy of the Hubble type SBbc in the constellation Bear Guardian and about 254 million light years from the Milky Way.
It was discovered by John Herschel on May 1, 1828 . However, it is possible that John Herschel only repeated the discovery of his father Wilhelm here . He had noted a galaxy with an appropriate description, which is now listed under NGC 5922 as a star observation, because the positional error for Wilhelm Herschel's observations would be unusually high.
Web links
- NGC 5923. SIMBAD, accessed May 11, 2016 .
- NGC 5923. DSO Browser, accessed May 11, 2016 .
- Auke Slotegraaf: NGC 5923. Deep Sky Observer's Companion, accessed on May 11, 2016 .