M 39
A large, loose open cluster in Cygnus, at its best in binoculars.
Tonight from
Rise, highest point and set are worked out on your device for the place above.
What it is
- Kind of object
- Open star cluster
- Distance
- 824 light years
- Brightness
- Magnitude 4.6, visible to the eye from a dark site, easy in binoculars
- Size in the sky
- About half the width of the full Moon
- Constellation
- Cygnus
- Catalogue
- M 39, NGC 7092
Figures from OpenNGC, CC BY-SA 4.0; the SEDS Messier catalogue, via Wikipedia’s table of Messier objects, CC BY-SA 4.0. All sources
Near it in the sky
- DenebA white supergiant in Cygnus, about a fist away.
- AlbireoAn orange bright giant in Cygnus, about two hand spans away.
- Dumbbell NebulaA planetary nebula in Vulpecula, about two hand spans away.
- VegaA white main-sequence star in Lyra, about two hand spans away.
- Ring NebulaA planetary nebula in Lyra, about two hand spans away.