LDN 640 (Dark nebula)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 76 arcminutes across.
Finder chart
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From South El Monte , LDN 640 is visible in the evening sky, becoming accessible around 20:59 (PDT), 43° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:34, 60° above your southern horizon. It will continue to be observable until around 03:58, when it sinks below 21° above your western horizon.
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Name
LDN 640
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Object type
Dark nebula
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Visibility from South El Monte
All times shown in South El Monte local time.