Planetary Nebula NGC 6765

NGC 6765
NGC 6765: Planetarischer Nebel in Lyra; 500 mm Cassegrain 5800 mm f/11.4; SBIG STL11K; 60+10+10+10 min LRGB; Bernese Highlands; © 2005 Radek Chromik [32]


This nebula of about magnitude 13 was first sighted on 28 June 1864 by the German astronomer Albert Marth and independently on 12th July 1866 by the American astronomer Truman Safford and on 2nd July 1870 by the French astronomer Édouard Stephan. In 1888 it was included by Dreyer as NGC 6765 in his «New General Catalogue of Nebulae and Clusters of Stars». He noted: «weak, small, elongated» [196]. Its true nature as a planetary nebula was not recognized until 1946 by Rudolph Minkowski. [141]

Physical Properties

The distance to Earth is 2334 pc, about 7600 light years. [145]

«Strasbourg-ESO Catalogue of Galactic Planetary Nebulae» Acker et al., 1992 [141]
Designations PN G062.4+09.5: NGC 6765, PK 62+09.1, ARO 185, M 1-68, VV 221, VV' 482
Right Ascension (J2000.0) 19h 11m 07s
Declination (J2000.0) +30° 32' 54"
Dimensions 40." (optical)
Radial Velocity -72.0 ± 25.0 km/s
Expansion Velocity 35.0 (O-III) km/s
C-Star Designations AG82 349
C-Star Magnitude V: 16.
Discoverer MINKOWSKI 1946

Finder Chart

NGC 6765 is located in the Lyra constellation. It is best to start looking at the globular cluster M 56, which is located about halfway between the stars Albireo (β Cygni) and Sulafat (γ Lyrae). From there one climbs to the 7.8 mag bright star HD 180187 on to the double star HD 179709 (7.9 mag, 9.1 mag, 10 arc seconds distance), which is on the same declination about 25 arc minutes west. Another 20 arc minutes to the northwest of this is the planetary nebula NGC 6765.

Finder Chart Planetary Nebula NGC 6765
Planetary Nebula NGC 6765 in constellation Lyra. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Objects Within a Radius of 15°