Arp 99 (Galaxy cluster)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From South El Monte , Arp 99 is visible in the evening sky, becoming accessible around 17:58 (PST), 55° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:16, 74° above your southern horizon. It will continue to be observable until around 01:19, when it sinks below 21° above your western horizon.
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Name
Arp 99
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Object type
Galaxy cluster
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Visibility from South El Monte
All times shown in South El Monte local time.