NGC 6729

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

NGC 6729
Reflection nebula
emission nebula
NGC 6729.jpg
Very detailed false-colour image from ESO's VLT.
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

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]

Map showing location of NGC 6729 (Roberto Mura)

Variable nebulaEdit

NGC 6729 is a variable nebula which shows irregular variations in brightness and in shape.[3]

See alsoEdit


  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

External linksEdit

Coordinates:   19h 01m 54s, −36° 57′ 12″