Astronomy:NGC 6729
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Short description: Reflection nebula in the constellation Corona Australis
| 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 |
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]
See also
- McNeil's Nebula
- NGC 1555 (Hind's Variable Nebula)
- NGC 2261 (Hubble's Variable Nebula)
References
- ↑ 1.0 1.1 1.2 1.3 "NGC/IC Project Database". Results for NGC 6729. http://www.ngcicproject.org/ngcicdb.asp.
- ↑ "NASA/IPAC Extragalactic Database". Results for NGC 6729. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+6729.
- ↑ Robert Burnham, Jr.: Burnham's Celestial Handbook, Volume 2: Chamaeleon through Orion, pages 695-696: NGC 6726-6727-6729 and R Coronae Australis
External links
- NGC 6729 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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Coordinates: 
19h 01m 54s, −36° 57′ 12″
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