Globular cluster · constellation Sgr
NGC 6642
NGC 6642ESO 522-032MWSC 2941
Catalogue data
- Right ascension
- 18h 31m 54.2s
- Declination
- -23° 28' 34"
- Size
- 3.9′
- Position angle
- not available
- Magnitude
- 10.2 (V)
- Surface brightness
- 21.82 mag/arcsec²(derived)
- Difficulty
- 3/5
- Suggested techniques
- LRGB, RGB, OSC
- Data source
- OpenNGC
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