Sh 2-21

Last updated
Sharpless 2-21
Emission nebula
H II region
RCW 142 DECaPS DR2.jpg
As seen by the legacy survey
Observation data: J2000 epoch
Right ascension 17h 51m 42s
Declination −28° 54′ 00″ [1]
Distance7600  pc
Apparent dimensions (V)10' [2]
Constellation Sagittarius
Designations RCW 142, LBN 4
See also: Lists of nebulae

Sh 2-21 is an emission nebula in the constellation Sagittarius. It is part of the Sharpless Catalog assembled by Stewart Sharpless. It is associated with four infrared clusters, [DB2000] 7, [DB2000] 10, [DB2000] 11 and [DB2000] 12. Open cluster Collinder 351 is included as part of the nebula complex. [3]

References

  1. ↑ "Sh 2-21".
  2. ↑ "CCD Images of the Sharpless Catalog".
  3. ↑ "Sh 2-21".
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