Arp 151 (Galaxy cluster)

From Cambridge , Arp 151 will become visible at around 21:41 (EDT), 39° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 00:01 when it dips 21° above your north-western horizon.
Name
Arp 151
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Object type
Galaxy cluster
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All times shown in Cambridge local time.