NGC 6729

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]

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 ascension	19h 01m 54.1s[1]
Declination	−36° 57′ 12″[1]
Apparent dimensions (V)	2.5′ × 2.0′[2]
Constellation	Corona Australis
Designations	Caldwell 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] 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

• McNeil's Nebula
• NGC 1555 (Hind's Variable Nebula)
• NGC 2261 (Hubble's Variable Nebula)