Globular Cluster Messier 12 (M12 or NGC 6218) (Tom Wildoner)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: HD151392 · HD151526 · HD151630 · M 12 · NGC 6218

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Globular Cluster Messier 12 (M12 or NGC 6218)

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Globular Cluster Messier 12 (M12 or NGC 6218)

Messier 12 (M12 or NGC 6218 in the New General Catalog) is a globular cluster in the constellation Ophiuchus. It is also referred to as the “Gumball Globular”. It was discovered in 1764 by the French astronomer Charles Messier who described it as a “nebula without stars”. M12 is approximately 15,700 light-years distant. You will definitely need binoculars or a small telescope to see this cluster. This cluster contains about 200,000 stars, the brightest of them are about 12th magnitude.

Observation data (J2000 epoch)
Class: IX
Constellation: Ophiuchus
Right ascension: 16h 47m 14.18s
Declination: –01° 56′ 54.7″
Distance: 16.44 ± 0.16 kly
Apparent magnitude (V): 6.7
Apparent dimensions (V): 16′.0

Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO ASI2600MC camera running at 0F, 90x60 seconds guided exposures, Sky-Watcher EQ6R-Pro pier mounted, ZWO EAF and ASIAir Pro, processed in DSS and PixInsight. Image Date: May 11, 2023. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

Messier Objects

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Status	Advanced success
Started	...
PixInsight job	Y3TFLW39FBDXBIE2QU4JLDQS6LEC0COY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h47m15s.590
RA (top/left)	16h49m18s.248
RA (top/right)	16h45m00s.530
RA (bottom/right)	16h45m12s.570
RA (bottom/left)	16h49m29s.933

Dec (center)	-01°57′15″.70
Dec (top/left)	-01°31′25″.82
Dec (top/right)	-01°35′25″.75
Dec (bottom/right)	-02°23′10″.90
Dec (bottom/left)	-02°18′59″.99

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Globular Cluster Messier 12 (M12 or NGC 6218)

Globular Cluster Messier 12 (M12 or NGC 6218)

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Globular Cluster Messier 12 (M12 or NGC 6218)

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