Astronomy:Sh 2-16
From HandWiki
| Nebula | |
|---|---|
| H II region | |
 Sh 2-16 seen faintly behind the overlaid star cluster Collinder 347. | |
| Observation data: epoch | |
| Right ascension | 17h 46m 37.2s |
| Declination | −29° 22′ 02″[1] |
| Distance | 1550±150 pc |
| Apparent magnitude (V) | 15.23[2] |
| Apparent diameter | 12'[3] |
| Constellation | Sagittarius |
| Physical characteristics | |
| Radius | 28 ly |
| Designations | RCW 137, Gum 70, LBN 1124 |
Sh 2-16 is an emission nebula in the constellation Sagittarius. It is ionized by the star LSS 4381. The nebula also contains an infrared cluster, [DB2000] 56.[4] It is at the same location as open cluster Collinder 347 which is located closer than the nebula.
The region appears mostly red in visible light, making observation best through a Hydrogen-alpha filter.[5]
References
- ↑ "Sh 2-16". https://simbad.u-strasbg.fr/simbad/sim-id?Ident=Sh+2-16&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id.
- ↑ "Sharpless (Sh2) - Astrobasics". 13 September 2022. https://astrobasics.de/galerie/kataloge/sh2/#object-10428.
- ↑ "Sharpless2-16 Lhargb_Hr". https://www.baskies.com.ar/PHOTOS/SHARPLESS%202-16%20LHARGB%20HR.htm.
- ↑ "Sh 2-16". http://galaxymap.org/cat/view/sharpless/16.
- ↑ "CCD Images of the Sharpless Catalog". http://www.sharplesscatalog.com/sharpless.aspx.
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