The open cluster M 23

Image of M 23
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 16 arcminutes across.
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From Cambridge , M 23 is visible in the morning sky, becoming accessible at around 02:20, when it rises 20° above your south-eastern horizon. It will then reach its highest point in the sky at 04:37, 28° above your southern horizon. It will be lost to dawn twilight at around 04:38, 28° above your southern horizon.

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Name M 23
Object Type Open Cluster
Other Names
NGC 6494
Cr 356
Mel 184
Magnitude:5.50 (V)[2]
6.03 (B)[1]
B-V Color (mag):0.53
Right Ascension:17h57m [1]
Declination:-18°59' [1]
Distance:628.0 parsec
2047.3 lightyrs [1]
Derived Quantities
Absolute Mag (V):-3.49




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