NGC/IC Project Restoration Effort

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NGC7320

 

Basic Information


Location and Magnitude


Right Ascension: 22:36:3.5
Declination: +33:56:54
Constellation: PEG
Visual Magnitude: 12.6

Historic Information


Discoverer: Stephan
Year of discovery: 1876
Discovery aperture: 31.0

Observational


Summary description: F, vS
Sub-type: Scd

Corwin's Notes

===== NGC 7320 is another of the galaxies apparently in "Stephan's Quintet" (Edouard Stephan actually saw only four of the five galaxies; see NGC 7318 for that story). This particular galaxy is a foreground object, coincidentally superposed on the interacting group of four much more distant galaxies. It is also a companion of the much brighter NGC 7331 which is about half a degree away.

Steve's Notes

===== NGC 7320 18" (6/25/04): fairly faint, fairly small, elongated 3:2 NW-SE, ~50"x30". A mag 14 star is embedded on the SE portion of the halo, just 15" from the center. The brightness of NGC 7320 is comparable to the combined glow of NGC 7318A/B. The Quintet was viewed at 257x and 300x. This galaxy has a very low redshift compared to the other group members, so has been a subject of controversy but is likely a foreground object. 17.5" (9/14/85): brightest in Stephan's quintet consisting of five galaxies within a 4' diameter circle. Moderately bright, moderately large, brighter core, elongated 5:2 NW-SE. A mag 14.5 star is at the SE side 15" from the center. NGC 7317 lies 2.5' W, NGC 7318 pair is 1.7' NW and NGC 7319 1.7' N. Located 30' SSW of NGC 7331. 13": faint, elongated NW-SE. 8" (6/27/81 and 8/28/81): extremely faint, small. 6" (6/25/04): marginal but definitely glimpsed at moments with a 6" mask at 115x and 140x.