Planetary Nebula NGC 6772

History

The planetary nebula was discovered by William Herschel on 21 July 1784 using his 18.7" reflecting telescope. He cataloged it as IV 14 (class IV = planetary nebula) and noted: «Very faint of equal light. resolvable 1' diameter in the midst of numberless stars of the milky way» [463] J. L. E. Dreyer listed it 1888 as NGC 6772 in his famous «New General Catalogue» [313]

Physical Properties

NGC 6772 is with a dynamical age of circa 11'000 years one of the older planetary nebulae. It's morphology is that of an elliptical shell with apparent distortion along the north-east to south-west axis. This structure may be a result of interactions between the expanding shell and the interstellar medium (ISM) [538]

«Strasbourg-ESO Catalogue of Galactic Planetary Nebulae» Acker et al., 1992 [141]
DesignationsPN G033.1-06.3: NGC 6772, PK 33-06.1, ARO 102, Sa 2-384, VV 224, VV' 486
Right Ascension (J2000.0)19h 14m 28s
Declination (J2000.0)-02° 42' 26"
Dimensions 64." (optical), 90." (radio)
Distance 1.3 kpc :
Radial Velocity0.0 km/s ± 4.0 km/s
Expansion Velocity 10.2 km/s (O-III), 25. km/s (N-II)
C-Star DesignationsAG82 355
C-Star Magnitude19.02 mag (B filter), 18.68 mag (V filter)
DiscovererPICKERING 1879

Finder Chart

The planetary nebula NGC 6772 is located in the constellation Aquila. The best time to observe it is during the months of July to September.

Chart Planetary Nebula NGC 6772
Planetary Nebula NGC 6772 in constellation Aquila. Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]

More Objects Nearby (±15°)

References

141Strasbourg-ESO Catalogue of Galactic Planetary Nebulae; A. Acker, F. Ochsenbein, B. Stenholm, R. Tylenda, J. Marcout, C. Schohn; European Southern Observatory; ISBN 3-923524-41-2 (1992); cdsarc.unistra.fr/viz-bin/cat/V/84 (2021-02-18)
149SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
160The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
313«A New General Catalogue of Nebulae and Clusters of Stars, being the Catalogue of the late Sir John F.W. Herschel, Bart., revised, corrected, and enlarged» Dreyer, J. L. E. (1888); Memoirs of the Royal Astronomical Society. 49: 1–237; Bibcode:1888MmRAS..49....1D
463«Catalogue of one thousand new nebulae and clusters of stars» William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1786; DOI:10.1098/rstl.1786.0027
538«A New Radio Molecular Line Survey of Planetary Nebulae: HNC/HCN as a Diagnostic of Ultraviolet Irradiation» Jesse Bublitz, Joel H. Kastner, Miguel Santander-García, Valentin Bujarrabal, Javier Alcolea, Rodolfo Montez Jr; A&A 625, A101 (2019); arXiv:arXiv:1904.08440; DOI:10.1051/0004-6361/201834408