The open cluster NGC 6939

Image of NGC 6939
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 12 arcminutes across.
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From Cambridge , NGC 6939 is visible all night because it is circumpolar. It will be highest in the sky shortly before dawn, when it will be lost to twilight around 04:46, 59° above your north-eastern horizon. At dusk, it will become visible around 20:42 (EDT), 14° above your northern horizon.

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Name NGC 6939
Object Type Open Cluster
Other Names
Cr 423[3]
Mel 231[4]
Position
Constellation:Cepheus
Magnitude:7.80 (V) [4]
8.85 (B) [2]
B-V Color (mag):1.05
Right ascension:20h31m [2]
Declination:+60°39' [2]
Distance:1.8 kpc
5.9 klyr [1]
Derived Quantities
Absolute mag (V):-3.48
Visibility from Cambridge

All times shown in Cambridge local time.

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Cambridge

Latitude:
Longitude:
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42.38°N
71.11°W
EDT

Color scheme