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 not observable – it will reach its highest point in the sky during daytime and is no higher than 19° above the horizon at dusk.
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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 |