Class X: Right ascension 18 04 48.0 Distance 25.4 kly (7.8 kpc) | Declination –07° 35′ 00″ Apparent magnitude (V) 9.6 | |
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NGC 6539 (also GCL 85) is a globular cluster in the constellation Serpens. It was discovered by Theodor Brorsen in 1856.
References
NGC 6539 Wikipedia(Text) CC BY-SA