Sharpless 21 (HII region)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
From South El Monte , Sharpless 21 is visible between 00:18 and 03:56. It will become accessible at around 00:18, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 02:07, 27° above your southern horizon. It will become inaccessible at around 03:56 when it sinks below 21° above your south-western horizon.
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Name
Sharpless 21
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Object type
HII region
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Position
| Right ascension: | 17h51m [1] |
| Declination: | −28°53' [1] |
| Constellation: | Sagittarius |