M39

open star cluster · in Cygnus

965 light-years from Earth

A large, loose cluster in Cygnus, easy in binoculars: a few dozen bright stars spread over an area about the size of the full Moon.

• 965 light-years (Gaia) · its stars spread over about 80 light-years
• 300 to 450 million years old · 284 of its stars as Gaia measured them

kind

nebula · star cluster

catalogue

M39 · NGC 7092

size

78 light-years across