NGC 7331

DSS Image annotation ©Copyright 1996 through 2008 by Robert E. Erdmann, Jr. - All rights reserved.
Commercial use of these images (books, software, etc.) is strictly prohibited without written permission.

Digitized Sky Survey (DSS) Image Information for NGC 7331

DSS Acknowledgement , DSS Copyright Notice		DSS Image Generation: 1st Generation DSS Image
Image Center (2000): 22h 37m 04.5s; +34º 25' 01"		Image File Name: n7331.jpg
Image Size (arcminutes): 20' x 20'		Image Size (pixels): 353 x 353
Original NGC Catalogue Data for NGC 7331
General Catalogue Designation: 4815		William Herschel Designation: I 53
John Herschel Designation: 2172		Other Observers: ...
Right Ascension (Equinox 1860): 22h 30m 40s		Annual RA Precession (Equinox 1880): +2.74s
North Polar Declination (Equinox 1860): 56° 18.5'		Annual DEC Precession (Equinox 1880): -18.6"
Summary Description: B, pL, pmE 163°, smbM
Notes: †	Comments: …
Discovered by: Friedrich Wilhelm Herschel (1738 - 1822)			Year of Discovery: 1784
Telescope Aperture (Inches): 18.7		Telescope Type: Reflector
Understanding the 'Summary Description': Summary Description Abbreviations List
Contemporary/Current Data for NGC 7331
Right Ascension (2000): 22h 37m 04.5s		Declination (2000): +34º 25' 01"
Object Type: Galaxy		Object Classification: Sb I-II
Constellation: Pegasus		Position Angle: 171 °
Visual Magnitude: 9.7		Surface Brightness: 13.5
Blue Magnitude: 10.3		Object Size: 10.5'X3.7'
Also Cataloged As:	UGC 12113, MCG+06-49-045, H I-53, h 2172, GC 4815, CGCG 514.068, PGC 69327
Catalogue Notes: Brightest & largst membr of NGC 7331 group of galxies.
Book / Chart References for NGC 7331
Luginbuhl & Skiff (Page): 183		Burnham's (Volume : Page): 3:1387
Uranometria 2000: 123		Herald-Bobroff Astroatlas: C-22
Microsky: 290		GSC Small Region Number: 2743
POSS Blue Plate #: 838		POSS Red Plate #: 838
Database Update Level: 2 (Complete)
Contemporary Visual Observation(s) for NGC 7331
NGC 7331 = UGC 12113 = MCG +06-49-045 = CGCG 514-068 = Ho 795a = LGG 459-003 22 37 04.1 +34 24 56 V = 9.5; Size 10.5x3.7; SB = 13.3; PA = 171d 13.1" (7/27/84): very bright, very elongated 3:1 NNW-SSE, 9'x2.5', very bright elongated core, substellar nucleus. The west side has a sharper edge due to dust. Four companions are close following with the brightest three N7335 3.5' ENE, N7337 5.2' SE, N7336 5.3' NE and N7340 8.1' E of center. Stephan's Quintet lies 30' SSW. 8" (8/28/81): very bright, large, nucleus bulge, very elongated. Two extremely faint companions to the E are just visible. - by Steve Gottlieb
Historical Research Notes / Correction for NGC 7331
NGC 7331. See NGC 7327 and NGC 7335. - Dr. Harold G. Corwin, Jr.
Correction Disclaimer
As with all corrections to the NGC and IC Catalogues, there is a certain margin for error, even though the evidence supporting the correction may be strong and compelling. It is with this in mind that we ask the user to use this information as 'Most Probable', but never to assume the correction is 'Absolute'. All published corrections are based on an exhaustive 'paper chase' of the historical record back to the original discoverer's published notes/papers, and are therefore based upon the historical accuracy (or inaccuracy) of those particular notes/papers. In short, Caveat Emptor! - Robert E. Erdmann, Jr.
Data Sources Used to research NGC 7331
[NGC] New General Catalogue / [IC] Index Catalogue (Dreyer - 1888, 1895, 1908) [OHCDSO] Observing Handbook and Catalog of Deep-Sky Objects (Luginbuhl & Skiff - 1990) [GD-NGCDDB] NGC Discoverer's Database (DeLange - 1987 to 2006) [UGC] Uppsala General Catalog of Galaxies (Nilson - 1973) [HC-PSDB] NGC Historical Notes Database (Corwin - 1996 thru 2006) [RE-AZDB] The Arizona Database®, V15.5 (Erdmann - 1987 thru 2006) [HC-PPL] NGC/IC Accurate Positions List Database (Corwin - 1996 thru 2006) [SG-NGCO] NGC/IC Observations Database (Gottlieb - 1998 thru 2006) [PGC] Principle Galaxy Catalog (Paturel et al. - 1989, 2003) [MOL] Master List of Nonstellar Optical Astronomical Objects (Dixon & Sonneborn - 1980) [DSS] Digitized Sky Survey - 1st (102 CD-ROM) and 2nd (Web Site) Generation (STScI - 1994) [NED] NASA's Extragalactic Database (NED) located at http://nedwww.ipac.caltech.edu/
Additional Notes
• 1st generation images were generated from the 102 CD-ROM version of the Digitized Sky Survey (DSS) • 2nd generation images were generated at the DSS web site located at http://archive.stsci.edu/cgi-bin/dsswin • Luginbuhl & Skiff page numbers are from 'Observing Handbook and Catalogue of Deep-Sky Objects' by Christian B. Luginbuhl and Brian A. Skiff, produced by Cambridge University Press • Burnham's refers to 'Burnham's Celestial Handbook' in three volumes produced by Dover Publications, Inc. • Uranometria 2000 chart numbers are for those printings authored by Tirion, Rappaport & Lovi, and are not for the most recent printings authored by Tirion, Rappaport & Remaklus in which the charts were re-numbered, all of which were and/or are produced by Willmann-Bell, Inc. • The Herald-Bobroff Astroatlas is by D. Herald and P. Bobroff of Canberra, Australia and is produced by HB2000 Publications • Microsky® is the microfiche rendition of the Palomar Observatory Sky Survey (POSS) produced by Deen Publications (P.O. Box 867088; Plano Texas 75086) • POSS refers to the Palomar Observatory Sky Survey produced by The National Geographic Society in conjunction with The California Institute of Technology • All DSS image annotation was performed by Robert E. Erdmann, Jr., and is ©Copyright 1996 through 2008 by Robert E. Erdmann, Jr. - All rights reserved • All product names, trademarks, and copyrights are the property of their respective owners • Contemporary/Current Data for this object was hand collected and entered from the data sources listed in the "Data Sources Used" section of this table above.- Robert E. Erdmann, Jr.