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M12 is well placed

Sunday, 2018, June 3 - 01:00

Dominic Ford – originally published on

The globular cluster M12 (NGC 6218) in Ophiuchus will be well placed for observation. It will reach its highest point in the sky at around midnight local time.

At a declination of -01°57', it is visible across much of the world; it can be seen at latitudes between 68°N and 71°S.

From London (click to change), it will be visible all night. It will become visible at around 23:20 (BST) as the dusk sky fades, 32° above your south-eastern horizon. It will be lost to dawn twilight at around 02:38, 32° above your south-western horizon.

At magnitude 6.6, M12 is quite faint, and certainly not visible to the naked eye, but can be viewed through a pair of binoculars or small telescope.

The precise position of M12 is as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
M12 16h47m10s -01°57' Ophiuchus 6.6 0'14"

The coordinates above are given in J2000.0.

The details of this observing event were provided courtesy of