Astronomy:Sh 2-40
From HandWiki
| Emission nebula | |
|---|---|
| H II region | |
 Seen near the top | |
| Observation data: J2000 epoch | |
| Right ascension | 18h 12m 10s |
| Declination | −17° 42′ 48″[1] |
| Apparent dimensions (V) | 15' x 15'[2] |
| Constellation | Sagittarius |
| Physical characteristics | |
| Radius | 2400 pc |
| Designations | RCW 155, LBN 49 |
Sh 2-40 is a large nebula in Sagittarius. It is just north of Sh 2-41. Sh 2-40 is in the same direction as powerful radio source W 33. W 33 is, however, about 4600 parsecs more distant than Sh 2-40.[3]
References
- ↑ "SIMBAD query result". https://simbad.u-strasbg.fr/simbad/sim-id?Ident=Sh%202-40&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2005&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0.
- ↑ "Sharpless (Sh2) - Astrobasics". 13 September 2022. https://astrobasics.de/galerie/kataloge/sh2/#object-10447.
- ↑ "Sh 2-40". http://galaxymap.org/cat/view/sharpless/40.
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