Open cluster · constellation Sgr
NGC 6647
NGC 6647MWSC 2939
Catalogue data
- Right ascension
- 18h 32m 49.3s
- Declination
- -17° 13' 43"
- Size
- 3.6′
- Position angle
- not available
- Magnitude
- 8.0 (V)
- Surface brightness
- 19.41 mag/arcsec²(derived)
- Difficulty
- 2/5
- Suggested techniques
- RGB, OSC
- Data source
- OpenNGC
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