Arp 87 (Galaxy cluster)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From South El Monte , Arp 87 will become visible at around 21:18 (PDT), 50° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:35.
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Name
Arp 87
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Object type
Galaxy cluster
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Source