NGC 7039
AladinLite | |
Constellation | swan |
Position equinox : J2000.0 |
|
---|---|
Right ascension | 21 h 10 m 45.7 s |
declination | + 45 ° 37 ′ 19 ″ |
Appearance
|
|
classification | III2p |
Brightness (visual) | 7.6 likes |
Angular expansion | 15.0 ' |
Physical data
|
|
Affiliation | Milky Way |
Redshift | −0.000037 |
Radial velocity | −11.00 km / s |
distance | 3100 ly (950 pc ) |
history | |
Discovered by | John Herschel |
Discovery time | September 19, 1829 |
Catalog names | |
NGC 7039 • C 2109 + 454 • OCl 203 • Cr 431 • GC 4645 • h 21ß7 • |
NGC 7039 is an open cluster of Trumpler type III2p in the constellation Swan at the northern sky . It has a brightness of 7.6 mag and an angular diameter of 15 arc minutes.
The object was discovered on September 19, 1829 by John Herschel .