Messier 39

Date: 9 July 2022

Altitude: 64 - 70 degrees

Angular Size: 1° 00' x 0° 45'

Position Angle: 1° 19' from north through east

Orientation: North up; East left

Pixel scale: 1.30" per pixel

Total exposure time: 60 minutes

B filter: 66 x 22 seconds

V filter: 66 x 18 seconds

R filter: 66 x 15 seconds

Messier 39 is also known as NGC 7092

Open cluster: ~30 stars

Constellation: Cygnus

Diameter: 9 light years

Distance: 1,100 light years

Age: 280 million years

Notes

Discovered by Guillaume Le Gentil in 1749; Charles Messier added it to his catalogue in 1764.