NGC 657
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Cassiopeia |
|
Position equinox : J2000.0 |
|
|---|---|
| Right ascension | 01 h 43 m 20.8 s |
| declination | + 55 ° 50 ′ 11 ″ |
| Appearance
|
|
| Brightness (visual) | 7 likes |
| Angular expansion | 7.0 / 7.0 |
| Physical data
|
|
| distance | 4500 ly (1372 pc ) |
| history | |
| Discovered by | John Herschel |
| Discovery time | November 28, 1831 |
| Catalog names | |
| NGC 657 • OCl 337 • GC 388 • h 146 • | |
NGC 657 is the name of an open star cluster in the New General Catalog . The star cluster lies in the constellation Cassiopeia ; it was discovered in 1831 by the astronomer John Herschel .
Web links
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ SEDS : NGC 657
- ↑ AL Tadross: A catalog of 120 NGC open star cluster . In: Journal of the Korean Astronomical Society , 44, 2011, pp. 1-11. doi: 10.5303 / JKAS.2011.44.1.1 .
- ↑ cseligman.com: NGC Objects: NGC 650-699 , accessed August 27, 2017