Sharpless 138 (HII region)
From Cambridge , Sharpless 138 is visible in the dawn sky, becoming accessible around 00:52 (EDT), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 46° before fading from view as dawn breaks at 04:30.
Name
Sharpless 138
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Object type
HII region
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All times shown in Cambridge local time.