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 San Diego , NGC 6939 is visible all night. It will become visible around 19:39 (PDT), 59° above your northern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:56, 62° above your northern horizon. It will continue to be observable until around 03:50, when it sinks below 21° above your north-western horizon.

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Name NGC 6939
Object Type Open Cluster
Other Names
Cr 423[3]
Mel 231[4]
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 San Diego

All times shown in San Diego local time.



San Diego



Color scheme