Open cluster · constellation Cep
NGC 6939
NGC 6939MWSC 3357
Catalogue data
- Right ascension
- 20h 31m 30.1s
- Declination
- +60° 39' 43"
- Size
- 12.0′
- Position angle
- not available
- Magnitude
- 7.8 (V)
- Surface brightness
- 21.82 mag/arcsec²(derived)
- Difficulty
- 3/5
- Suggested techniques
- RGB, OSC
- Data source
- OpenNGC
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