Globular Cluster NGC 6366

NGC 6366
NGC 6366: Section of the colorized DSS2 [147]


This globular cluster was discovered on 12 April 1860 by the German astronomer August Winnecke using his private 3 inch Merz refractor while he was working at Pulkowo Observatory south of St. Petersburg. [277]

Physical Properties

NGC 6366 is a metal-rich Galactic globular cluster and the fifth closest to the Sun. Its kinematics suggests a link to the galactic halo, but its metallicity indicates otherwise. A presence of second generation stars is not evident. [590]

Revised+Historic NGC/IC, Version 22/9, © Dr. Wolfgang Steinicke [277]
DesignationNGC 6366
TypeGCL (XI)
Right Ascension17h 27m 44.3s
Declination-05° 04' 34"
Diameter13 arcmin
Visual magnitude9.5 mag
Metric Distance3.500 kpc
Dreyer DescriptionF, L, vlbM (Auw 36)
Identification, RemarksGCL 65

Finder Chart

The globular cluster NGC 6366 is located in the constellation Ophiuchus. The best observation time is in the months March through August.

Chart Globular Cluster NGC 6366
Globular Cluster NGC 6366 in constellation Ophiuchus. Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]

Visual Observation

Pending ...

More Objects Nearby (±15°)


147Aladin Lite; (2020-12-23)
149SkySafari 6 Pro, Simulation Curriculum;
160The STScI Digitized Sky Survey;
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; (2021-02-17)
590«Chemical analysis of eight giant stars of the globular cluster NGC 6366» Arthur A Puls, Alan Alves-Brito, Fabíola Campos, Bruno Dias, Beatriz Barbuy Monthly Notices of the Royal Astronomical Society, Volume 476, Issue 1, May 2018, Pages 690–704; DOI:10.1093/mnras/sty267