The NGC/IC Project

NGC 4051

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 4051
DSS Acknowledgement ,  DSS Copyright Notice DSS Image Generation:  1st Generation DSS Image
Image Center (2000):  12h 03m 09.6s; +44º 31' 53"Image File Name:  n4051.jpg
Image Size (arcminutes):  10' x 10'Image Size (pixels):  353 x 353
Original NGC Catalogue Data for  NGC 4051
General Catalogue Designation:  2680William Herschel Designation:  IV 56
John Herschel Designation:  1061Other Observers:  ...
Right Ascension (Equinox 1860):  11h 55m 59sAnnual RA Precession (Equinox 1880):  +3.09s
North Polar Declination (Equinox 1860):  44° 41.7'Annual DEC Precession (Equinox 1880):  +20.1"
Summary Description:  B, vL, E, vgvsmbM * 11
Notes:  Comments:  
Discovered by:  Friedrich Wilhelm Herschel (1738 - 1822)Year of Discovery:  1788
Telescope Aperture (Inches):  18.7Telescope Type:  Reflector
Understanding the 'Summary Description':  Summary Description Abbreviations List
Contemporary/Current Data for  NGC 4051
Right Ascension (2000):  12h 03m 09.6sDeclination (2000):  +44º 31' 53"
Object Type:  GalaxyObject Classification:  SAB(rs)bc II
Constellation:  Ursa MajorPosition Angle:  135 °
Visual Magnitude:  10.7Surface Brightness:  13.9
Blue Magnitude:  11.3Object Size:  5.2'X3.9'
Also Cataloged As:  UGC 7030, MCG+08-22-059, PGC 38068, H IV-56, h 1061,
GC 2680, CGCG 243.038, IRAS 12005+4448
Catalogue Notes:  Seyfert galaxy.
Book / Chart References for NGC 4051
Luginbuhl & Skiff (Page):  251Burnham's (Volume : Page):  ------
Uranometria 2000:  74Herald-Bobroff Astroatlas:  C-12,C-30,D-35
Microsky:  171GSC Small Region Number:  3019
POSS Blue Plate #:  1338POSS Red Plate #:  1338
Database Update Level: 2 (Complete)
Contemporary Visual Observation(s) for NGC 4051
NGC 4051 = UGC 07030 = MCG +08-22-059 = CGCG 243-038 = PGC 38068
12 03 09.6 +44 31 53
V = 10.2;  Size 5.2x3.9;  SB = 13.3;  PA = 135d

17.5": fairly bright, large, ~4.0'x2.5' NW-SE.  Nearly extends to a mag 11 star 
2.2' W.  Very bright, very small core increasing to a bright stellar nucleus.  
The galaxy shows signs of spiral structure and there appears to be a short outer 
spiral arm attached at the SE end hooking N separated by a slightly darker 
region between the main body (verified on photo).

NGC position is accurate. The RA in the RNGC is 1.0 tmin too far W.

- by Steve Gottlieb

Data Sources Used to research NGC 4051
[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)
[RC3] Third Reference Catatalog of Bright Galaxies (de Vaucouleurs, Corwin, Buta, et. al. - 1991)
[CGCG] Catalog of Galaxies & Clusters of Galaxies (Zwicky - 1968)
[IRAS] IRAS Survey (NASA - 1989)
[HC-PPL] NGC/IC Accurate Positions List Database (Corwin - 1996 thru 2006)
[SG-NGCO] NGC/IC Observations Database (Gottlieb - 1998 thru 2006)
[RE-AZDB] The Arizona Database®, V15.5 (Erdmann - 1987 thru 2006)
[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.


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