|Observation data (J2000 epoch)|
|Right ascension||21h 31m 42s|
|Declination||+48° 25′ ″|
|Apparent magnitude (V)||+5.5|
|Other designations||Messier 39, NGC 7092|
Open Cluster M39 (also known as Messier Object 39, Messier 39, M39, or NGC 7092) is an open cluster in the constellation Cygnus. It was discovered by Charles Messier in 1764. M39 is at a distance of about 800 light-years away from Earth. Its age is estimated to be from 200 to 300 million years.
It is located at Right Ascension 21 hours, 32.2 minutes, and Declination +48 degrees 26 minutes.
It has a magnitude (brightness) of 5.5
- Messier 39, SEDS Messier pages
- Messier 39 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images