sponsored by psychohistorian.org
Type: galaxy (Seyfert 2), SBab
Mag: B=11.4, V=10.63
Size: 5.37′ x 2.344′
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "pB, L, pmE, gbM."
Table IV: Pos. in dec corrected.
Reynolds, J.H. (1921) The spiral nebulae in the zone –40° to –90° (from the Franklin-Adams Plates). MNRAS, 81, 598.
Table p 601: 4x1/5; pa90; "BN"
pB, 3'x0.5', E 155deg, sharp B stell.N., rather irr.spiral showing absorption.
Confirms HOB 22.
Galactic and Extragalactic Studies, III. Photographs of thirty southern nebulae and clusters. Proc. N.A.S., 26, 31-36.
Shapley, H. & Ames, A. (1932) A survey of the external galaxies brighter than the thirteenth magnitude. Annals Harvard College Obs., 88(2), 43.
Position given in NGC corrected by that published by Reinmuth's Die Herschel Nebel.
De Vaucouleurs (1956) "Survey of bright galaxies south of -35° declination", Mem. Mount Stromlo, No. 13. (photographic study, plates taken with the 30-inch Reynolds reflector, 20-inch diaphragm).
It forms part of the Grus Quartet (NGC 7552, NGC 7582, NGC 7590, NGC 7599)
(1975(Astrophysical Journal, 202, 563-582) notes that this galaxy is a member of the IC 1459 Grus Group. Members include NGC 7410, NGC 7412, NGC 7418, NGC 7421, NGC 7424, NGC 7496, NGC 7531, NGC 7552, NGC 7582, NGC 7590, NGC 7599, IC 1459, IC 5267, IC 5269 & IC 5273.
(Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads EL,B,HISB,SPN,PEC SPN,DIFPERIPH.
(1966, Mon. Not. R. astr. Soc., Vol 131, p351-363) notes that this member of the Grus Cluster has V = 11.15, B-V = 0.81 and U-B = 0.22. It measures 4.4 by 1.6.
This galaxy is listed in the "Third Reference Catalogue of Bright Galaxies" as having an outer ring of 4.25 arcminute diameter.
by Jim Lucyk: Ast.Obj.for South.Tel. (Hartung, 1984), Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p17.4, Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p18.6.
de Vaucouleurs, G. (1975) Nearby groups of galaxies. In: Kuiper, G. (ed) Stars and Stellar Systems. Volume 9: Galaxies and the Universe. Chapter 14, p557.
Possible foreground object: IC 5332 (in Sculptor group?)
Brightest members: NGC 7552 ( B(0) = 11.44), NGC 7424 ( B(0) = 11.46), NGC 7410 ( B(0) = 11.61), IC 5267 ( B(0) = 11.65), NGC 7582 ( B(0) = 11.84).
William P. Clarke (San Diego, California, USA) writes in the The Webb Society Nebulae and Clusters Section Report No. 11, January 1993: "Closely spaced group of three galaxies [NGC 7582, 7590 & NGC 7599]. NGC 7582 is extended N.p.-S.f. and does not have a distinct nucleus. The NGC 7590-9 pair are N.f. NGC 7582. They are both extended Sp-Nf with NGC 7590 half the size of NGC 7599. There is a star between the two and another in the north end of NGC 7590. (10-inch Newtonian, x80)."
Hartung notes: "This striking field contains in an area about 16' across three fairly bright spindles differently orientated, all visible with 10.5cm. In order of RA: 4'x1' pa 150 deg; 2' x 0.7' pa 45 deg; 4' x 2' pa 50 deg. The second is the brightest, and the third the faintest and most diffuse."
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12.0M; 4'x 2' extent; axis oriented NNW-SSE; no obs. data yet; look for SP GAL N7590 (12.5M; 2'x 1' extent) 10' to NE with fairly bright star on NE tip; look for ENE-WSW-oriented SP GAL N7599 (12M; 3'x 1' extent) 4' further E and a bit S with small stars involved; all should make fine trio in medium-x field; see photo Shapgal-202."
Steve Coe, observing with a 13" f/5.6, notes: "Pretty faint, large, elongated 2.5 X 1 in PA 45 and not much brighter in the middle at 100X. Forms a nice triple galaxy with NGCs 7590 and 7599."
15cm - lg br gx, wmost of Gru trio. m13-13.5 * off W side. 140x: 4'x1'.5 in pa160. strong broad concen to distinctly mottled core. f * or *ar nuc outstanding. another * or knot sup NNW side 1/2way out to tip. BS, 14Nov1993, LCO.
30cm - nice, velong in pa160, 3'x1'. core elong and broken up into two or three parts, spots about 30" across, uneven. 220x: core not as obviously partitioned.
Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.
The shape of this galaxy is vaguely long with an extension on both sides and that this galaxy's shape is somewhat elongated.The nuclues of this galaxy is comparitively tight and well defined and that there are some areas of uneven brightness being seen on the far outskirts of this galaxy.There are a few darker areas within the outskirts of this galaxy.The nucleus is brighter compared to the far outskirts of this galaxy.This galaxy measures 5'x 0.8'with PA NNW-to-SSE.Challenge Rating:Difficult.Chart:No.143,NSOG Vol.3.
The Messier objects
The Bennett objects
The Caldwell list
DOCdb is still in beta-release.
Known issues, feature requests, and updates on bug fixes, are here:
Found a bug? Have a comment or suggestion to improve DOCdb? Please let us know!
DOCdb is a free online resource that exists to promote deep sky observing.
You could help by sharing your observations, writing an article, digitizing and proof-reading historical material, and more.
Everything on DOCdb.net is © 2004-2010 by Auke Slotegraaf, unless stated otherwise or if you can prove you have divine permission to use it. Before using material published here, please consult the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License. Some material on DOCdb is copyright the individual authors. If in doubt, don't reproduce. And that goes for having children, too. Please note that the recommended browser for DOCdb is Firefox 3.x. You may also get good results with K-Meleon. Good luck if you're using IE. A successful experience with other browsers, including Opera and Safari, may vary.