NGC 225
|
|
| AladinLite | |
| Constellation | Cassiopeia |
|
Position equinox : J2000.0 |
|
|---|---|
| Right ascension | 00 h 43 m 36.4 s |
| declination | + 61 ° 46 ′ 01 ″ |
| Appearance
|
|
| classification | III1p |
| Brightness (visual) | +7.0 mag |
| Brightness (B-band) | +7.43 mag |
| Angular expansion | 15 ' |
| Number of stars | 15th |
| Brightest star | +9.3 mag |
| Redness ( excess color E (BV)) | 0.274 |
| Physical data
|
|
| Redshift | −0.000093 |
| Radial velocity | −28 km / s |
| distance | 2143 ly (657 pc ) |
| history | |
| Discovered by | Caroline Herschel |
| Discovery time | September 27, 1783 |
| Catalog names | |
| NGC 225 • C 0040 + 615 • OCl 305 • Cr 7 • Lund 25 • GC 120 • H VIII 78 • h 52 | |
NGC 225 is the name of an open star cluster in the constellation Cassiopeia in the northern sky . It has an apparent magnitude of +7.0 mag and a diameter of 15 '.
The open star cluster was discovered by Caroline Herschel in 1783 .
Web links
- Spektrum.de : Amateur recordings [1] [2] Map of the area
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b SEDS : NGC 225
- ↑ a b c SIMBAD database, operated at CDS, Strasbourg, France ( English ) Retrieved on March 16, 2008.
- ↑ Jean-Claude Mermilliod, Ernst Paunzen: A site Devoted to Stellar Clusters in the Galaxy and the Magellanic Clouds ( English ) Retrieved on March 16 of 2008.
- ↑ Seligman