Messier 39

Messier 39 (also known as NGC 7092 ) is a 4.6 like brighter, 30 stars comprehensive open cluster with an angular extent of 32 ' in the constellation Cygnus. Its distance from the earth is only about 800 light years. He belongs to middle age group ( estimates are 230-300 million years). Its diameter is about 7 light-years. M39 can be observed due to its large size of 32 arc minutes even with small telescopes or binoculars. In good to very good conditions it can even be seen with the naked eye. He appears as a triangle with a bright star on every corner, the southern side is oriented from east to west.