Sh 2-16
| 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″ |
| Distance | 1550±150 pc |
| Apparent magnitude (V) | 15.23 |
| Apparent diameter | 12' |
| 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. 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.