NGC 6755 is an open cluster of stars in the equatorial constellation of Aquila, positioned about 3° to the east of the star Delta Aquilae.[2] It was discovered by the Anglo-German astronomer William Herschel on July 30, 1785[5] and is located at a distance of 8,060 light years from the Sun.[1] NGC 6756 lies 30′ to the northeast of NGC 6755, with the pair forming a visual double cluster. However, they probably do not form a binary cluster system since they have different ages and are too distant from each other.[2]
This cluster has a Trumpler class of II2r with a visual magnitude of 7.5 and it spans an angular size 15′.[2] It has an estimated age of 250 million years, based on the main sequence turnoff.[3] A total of 71 variable stars have been detected in the field of this cluster, of which 31 are eclipsing binaries, seven are pulsating variables, and 28 are most likely irregular variable red giants.[6]
^ abcdCite error: The named reference Cantat-Gaudin_Anders_2020 was invoked but never defined (see the help page).
^ abcdeCite error: The named reference O'Meara2011 was invoked but never defined (see the help page).
^ abCite error: The named reference Kjeldsen_Frandsen_1991 was invoked but never defined (see the help page).
^Cite error: The named reference simbad was invoked but never defined (see the help page).
^Cite error: The named reference Seligman was invoked but never defined (see the help page).
^Cite error: The named reference Ciechanowska_et_al_2007 was invoked but never defined (see the help page).
NGC6755 is an open cluster of stars in the equatorial constellation of Aquila, positioned about 3° to the east of the star Delta Aquilae. It was discovered...
NGC 6756 is a small open star cluster in the constellation Aquila, close to NGC6755. Kharchenko, N. V.; et al. (2013), "Global survey of star clusters...
NGC 4881 is an elliptical galaxy in the northern constellation of Coma Berenices. It was discovered by the German astronomer Heinrich Louis d'Arrest on...
Embedded within Messier 24. Associated with Messier 17. Associated with NGC 6820. Embedded within the Iris Nebula. There are some errors in Collinder's...
II Program. The catalogue contains 400 objects. All objects are from the NGC. All objects are visible in mid northern latitudes, since they were all observed...
in NGC 6027d: SN 1998fe (type unknown, mag. 18). NGC 6027 NGC 6027a NGC 6027b NGC 6027c NGC 6027e "NASA/IPAC Extragalactic Database". Results for NGC 6027d...
constellation Serpens. NGC 6027 NGC 6027a NGC 6027b NGC 6027d NGC 6027e Seyfert's Sextet "NASA/IPAC Extragalactic Database". Results for NGC 6027c. Retrieved 2007-04-17...
NGC 6782 is a barred spiral galaxy located in the southern constellation of Pavo, at a distance of approximately 173 megalight-years from the Milky Way...
NGC 6509 is a galaxy in the New General Catalogue. It is located in the constellation Ophiuchus. It is a Sc type spiral galaxy. Simbad Astronomical Database...
constellation Serpens. NGC 6027 NGC 6027a NGC 6027c NGC 6027d NGC 6027e Seyfert's Sextet "NASA/IPAC Extragalactic Database". Results for NGC 6027b. Retrieved...
The Little Gem Nebula or NGC 6818 is a planetary nebula located in the constellation of Sagittarius. It has magnitude 10 and oval diameter of 15 to 22...
the constellation Serpens. NGC 6027 NGC 6027a NGC 6027b NGC 6027c NGC 6027d "NASA/IPAC Extragalactic Database". Results for NGC 6027e. Retrieved 2007-04-18...
telescopes. IC 4756 is also known as the Tweedledee Cluster (paired with NGC 6633 as Tweedledum), also as the Secret Garden Cluster. Metallicity of IC...
observers on Earth. NGC 6027 NGC 6027b NGC 6027c NGC 6027d NGC 6027e Seyfert's Sextet "NASA/IPAC Extragalactic Database". Results for NGC 6027a. Retrieved...
Global Information