Galaxies NGC 7752, NGC 7753

NGC 7753, NGC 7752
NGC 7753, NGC 7752: Galaxy in Pegasus; 500 mm Cassegrain f/7.2; SBIG STL11K; 270-80-80-80 min LRGB; Bernese Highlands; © 2015 Radek Chromik

History

The galaxy NGC 7753 was discovered on September 12, 1784 by the German-British astronomer William Herschel with his 18.7 inch reflecting telescope. He cataloged it as II 213. The discovery of the neighboring small galaxy NGC 7752 by RJ Mitchell had to wait until November 22, 1854. He observed the galaxy with the large 72 inch reflecting telescope of his employer William Parsons, 3rd Earl of Rosse. [277]

In Halton Arp's 1966 Atlas of Peculiar Galaxies, the two galaxies are listed as Arp 86, a spiral galaxy with large companions of high surface brightness, similar to M 51 / NGC 5195 (Arp 85). [199]

Physical Properties

The two galaxies are in gravitational interaction and are about 70 Mpc apart. [145, 439]

«Catalogue of Principal Galaxies (PGC)», Paturel et al. 1989 [144]
NameRA [hms]Dec [dms]mTypeDim [']Btot [mag]HRV [km/s]PA [°]
NGC 775223 46 58.5+29 27 32C M.4 x .215.05054113
NGC 775323 47 04.6+29 29 02SBRM2.9 x 1.913.0516550

Finder Chart

The galaxy pair NGC 7752/3 is located in the constellation Pegasus. The best observation time is June to November, when it is highest at night.

Chart NGC 7753
Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]

References

144Catalogue of Principal Galaxies (PGC); Paturel G., Fouque P., Bottinelli L., Gouguenheim L.; Astron. Astrophys. Suppl. Ser. 80, 299 (1989); cdsarc.unistra.fr/viz-bin/cat/VII/119 (2021-02-18)
145SIMBAD astronomical database; simbad.u-strasbg.fr/simbad
149SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
160The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
199Atlas Of Peculiar Galaxies, Halton Arp; ned.ipac.caltech.edu/level5/Arp/Arp_contents.html (2020-12-28)
277«Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)
439«The Interacting System NGC 7753--7752 (Arp 86). II. N-Body Modeling» Salo, Heikki ; Laurikainen, Eija; Astrophysical Journal v.410, p.586, June 1993; DOI:10.1086/172777