Messier Index/M39
Open Cluster M39 (also known as Messier Object 39, Messier 39, M39, or NGC 7092) is an w:open cluster in the w:Cygnus constellation. It was discovered by w:Charles Messier in w:1764. M39 is at a distance of about 800 w:light years away from w:Earth. Its age is estimated to be from 200 to 300 million years.
Credit: w:2MASS/w:NASA.
It is located at Right Ascension 21hours, 32.2 minutes, and Declination +48 degrees 26'.