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Loading contentM 39 is an open cluster in the constellation Cygnus. It shines at apparent magnitude 4.6 and spans about 19.5 arcminutes of sky.
Guidance follows standard observing practice, derived from the object's real magnitude and position. A dark, moonless sky always helps.
| Object | Type | Mag | Size (′) |
|---|---|---|---|
| North America NebulaC 20 · NGC 7000 | H II region | 4 | 120 |
| NGC 6871NGC 6871 | Open cluster | 5.2 | 9.3 |
| M 29M 29 · NGC 6913 | Open cluster | 6.6 | 3.6 |
| NGC 6811NGC 6811 | Open cluster | 6.8 | 7.2 |
| Eastern VeilC 33 · NGC 6992 | Supernova remnant | 7 | 60 |
| Eastern VeilNGC 6995 | Supernova remnant | 7 | 12 |
| NGC 7063NGC 7063 | Open cluster | 7 | 6.3 |
| Veil NebulaC 34 · NGC 6960 | Supernova remnant | 7 | 210 |
Facts on this topic will be cited from these primary and reference sources.
Openly-licensed deep-sky catalogue: object types, positions, magnitudes, sizes, morphology, and cross-identifiers.