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NGC 6729
Reflection nebula
emission nebula
NGC 6729 is the bright fan like nebula at the center of the image.
Observation data: J2000 epoch
Right ascension19h 01m 54.1s[1]
Declination−36° 57′ 12″[1]
Apparent dimensions (V)2.5′ × 2.0′[2]
ConstellationCorona Australis
DesignationsCaldwell 68
See also: Lists of nebulae

NGC 6729 (also known as Caldwell 68) is a reflection/emission nebula of the Corona Australis Molecular Cloud in the constellation Corona Australis. It was discovered by Johann Friedrich Julius Schmidt in 1861.[1]

This fan-shaped nebula opens from the star R Coronae Australis toward the star T CrA to the south-east. R CrA is a pre-main-sequence star in the Corona Australis molecular complex, one of the closer star-forming regions of the galaxy at a distance of 130 pc.[1] NGC 6729 is a variable nebula which shows irregular variations in brightness and in shape.[3]

Map showing location of NGC 6729 (Roberto Mura)

See also

References

  1. ^ a b c d "NGC/IC Project Database". Results for NGC 6729. Archived from the original on 2012-05-20. Retrieved 2010-12-09.
  2. ^ "NASA/IPAC Extragalactic Database". Results for NGC 6729. Retrieved 2010-12-09.
  3. ^ Robert Burnham, Jr.: Burnham's Celestial Handbook, Volume 2: Chamaeleon through Orion, pages 695-696: NGC 6726-6727-6729 and R Coronae Australis



source: https://en.wikipedia.org/wiki/NGC_6729