NGC 723
| Galaxy NGC 723 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 53 m 45.7 s |
| declination | -23 ° 45 ′ 28 ″ |
| Appearance | |
| Morphological type | SA (r) bc HI |
| Brightness (visual) | 12.5 mag |
| Brightness (B-band) | 13.3 mag |
| Angular expansion | 1.5 ′ × 1.3 ′ |
| Position angle | 166 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.004953 +/- 0.000007 |
| Radial velocity | 1485 +/- 2 km / s |
|
Stroke distance v rad / H 0 |
(65 ± 5) x 10 6 ly (19.9 ± 1.4) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | October 26, 1785 |
| Catalog names | |
| NGC 723 • PGC 7024 • ESO 477-013 • MCG -04-05-16 • IRAS 01514-2400 • 2MASX J01534567-2345279 • SGC 015126-2400.2 • GC 435 • H III 460 • h 166/2444 • NGC 724 • HIPASS J0153-23 | |
NGC 723 is a spiral galaxy in the constellation Whale , about 65 million light years from the Milky Way .
It was discovered on October 26, 1785 by the German-British astronomer Friedrich Wilhelm Herschel (as NGC 723) and on September 14, 1830 by the British astronomer John Frederick William Herschel (as NGC 724).
Web links
- SIMBAD Astronomical Database
- Auke Slotegraaf: NGC 723. Deep Sky Observer's Companion, accessed November 7, 2015 .