Open cluster · constellation Sgr
NGC 6645
NGC 6645MWSC 2946
Catalogue data
- Right ascension
- 18h 32m 37.9s
- Declination
- -16° 53' 02"
- Size
- 5.4′
- Position angle
- not available
- Magnitude
- 8.5 (V)
- Surface brightness
- 20.79 mag/arcsec²(derived)
- Difficulty
- 2/5
- Suggested techniques
- RGB, OSC
- Data source
- OpenNGC
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