NGC6840 (Open cluster)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
From South El Monte , NGC6840 is visible in the evening sky, becoming accessible around 20:24 (PDT), 56° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:16, 68° above your southern horizon. It will continue to be observable until around 03:02, when it sinks below 21° above your western horizon.
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Name
NGC6840
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Object type
Open cluster
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Source