Globular cluster · constellation Sco
M 4
NGC 6121M 4MWSC 2396
Catalogue data
- Right ascension
- 16h 23m 35.4s
- Declination
- -26° 31' 32"
- Size
- 28.2′
- Position angle
- not available
- Magnitude
- 5.4 (V)
- Surface brightness
- 21.28 mag/arcsec²(derived)
- Difficulty
- 3/5
- Suggested techniques
- LRGB, RGB, OSC
- Data source
- OpenNGC
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