Markarian 23 (Galaxy cluster)
From Cambridge , Markarian 23 is visible all night because it is circumpolar. It will be highest in the sky at dusk, becoming accessible at around 20:52 (EDT), 71° above your northern horizon. It will be lost to dawn twilight at around 04:30, 22° above your north-western horizon.
Name
Markarian 23
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Object type
Galaxy cluster
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All times shown in Cambridge local time.