Berkeley 86 is a young open cluster in Cygnus. It is located inside the OB Stellar association Cyg OB 1, and obscured by a foreground dust cloud.
Star nameEffective temperatureAbsolute magnitudeBolometric magnitudeMass ()Spectral typeWR 139 (V444 Cyg)60000 -4.04 -8.39.3WN5HD 193576 B (Companion to WR 139)42700 -5.5 -9.653O6IIIHD 22884141000 -5.4 -9.345O7VHD 19359538500 -4.9 -8.634O8VHD 22896934700 -5 -8.430O9.5VHD 22894331600 -5.3 -8.428B0V
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