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RA: 03h 42m 1.5s
Dec: −47° 13′ 19″
Ch: MSA:441, U2:391, SA:18
Type: galaxy, SBb
Mag: B=10.68, V=9.99
Size: 6.025′ x 4.168′
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Dunlop, J. (1828) A Catalogue of Nebulae and Clusters of Stars in the Southern Hemisphere, Observed at Paramatta in New South Wales. Phil. Trans. Roy. Soc., 118, 113-151. [1828RSPT..118..113D]
James Dunlop discovered this galaxy from Paramatta, New South Wales, and included it as No. 426 in his catalogue of 1827. Using a 9-inch f/12 telescope, he described it as "a very faint nebula, about 1' diameter, rather elliptical in the parallel of the equator; with a brightish point or condensation of the nebulous matter, a little to the preceding side of the centre."
John Herschel recorded it as "bright, large, pretty much elongated, suddenly much brighter in the middle; 100 arcseconds long, 60 arcseconds broad" His second observation was recorded as "very bright, large, much elongated, very suddenly very much brighter in the middle to a nucleus = 10th mag star."
Table IV: !! vB, vL, ellips.sp.
Reynolds, J.H. (1921) The spiral nebulae in the zone -40° to -90° (from the Franklin-Adams Plates). MNRAS, 81, 598.
Table, p601. 5x3, "! ring B stellar N, no spiral arms"
Ann.Harv.Coll.Obs., 88 (5)
, "A catalogue of 7889 external galaxies in the Horologium and surrounding regions" Ann.Harv.Coll.Obs. 88, No. 5, 107) notes that "earlier descriptions differ appreciably from the probably more dependable descriptions from the Bruce photographic plates . . . NGC 1433: Not much elongated."
Table II, p 110: Size estimate: 8'
(Sulentic and Tifft 1973) notes that this is a 11.0 mag galaxy.
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.
Part of the Dorado cloud complex (NGC 1566, NGC 1433, NGC 1672 groups).
Brightest members: 1433 ( B(0) = 10.9), 1512 ( B(0) = 11.58), 1448 ( B(0) = 11.67), 1493 ( B(0) = 12.10), 1411 ( B(0) = 12.16).
("Galaxies and the Universe", Chapter 14 - Nearby Groups of Galaxies) notes that the five brightest members of the NGC 1433 Group, a part of the Dorado Cloud complex, are NGC 1433, NGC 1512, NGC 1448, NGC 1493 & NGC 1411.
(Astron. Astrophys. Suppl. 33, 243-255) gives this galaxy's B-magnitude in the Johnson system as 10.8. They remark: "Large number of H II regions in ring and in spiral arms."
This galaxy is listed in the "Third Reference Catalogue of Bright Galaxies" as having an outer ring of 5.80 arcminute diameter.
A supernova erupted in this galaxy in 1985 (13.5v).
by Jim Lucyk: Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p8.1, Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p11.6, Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p13.3.
Hartung notes: "This nebula is a large faint haze 3' - 4' x 2' in pa 100 deg fading away imperceptibly at the indefinite edges, with a small bright nucleus hardly 20 arcsec across . . 10.5cm shows only this nucleus, hazy and faint."
15cm - big br gx w/vbr cen @ 80x. lg vf halo out to m12 * on SW, ~circ. oval
bar elong E-W crosses halo. 140x: halo unconcen and at threshold, bar
has mod broad concen, then circ 15" core vsharply brtr to br *ar nuc.
BS, 14Nov1993, LCO.
Location: Pietersburg South 23o 53. East 29o 28.
Sky conditions: Clear.
Date: 4 Julie 1997.
Field of view: 52.7 arc minutes.
ASSA-DSO - Report J
NGC 1433 Mag 10 size 6
Medium to large size galaxy, with a very bright small starlike nucleus surrounded in haziness. Shade out in a soft oval light.
8-inch f/10 SCT, 16-inch f/10 SCT
Reasonably large smear or light, immediately visible in the field of view. Quite conspicuous with its soft circular and slightly oval east to west appearance. From a very bright nucleus it shades out soft to form a woolly outer edge (290x). Fainter stars visible in the immediate western portion of the galaxy. Further southwards are two stars that are seemingly double. IC 1984-positioned just 24' arc minutes west of NGC 1433 with a magnitude of 16, to me, is not visible. Dunlop and Herschel called it elliptical. Recent photographs contradict this statement. Star like nucleus at the centre? Dunlop does not think so, Herschel on the other hand does. (Mag 10.0; size 5.5' x 3.2'; SB 13.0; PA 99)
IC 1984-positioned just 24' arc minutes west of NGC 1433 with a magnitude of 16, to me, is not visible.
Observing site: Fall Star Party
[3h 42m 0s, -47° 13' 0"] A bright galaxy, small, but very close to the horizon, so no accurate detail was seen. B: SBa.
Location:Blesfontein Guest Farm,Sutherland.
Sky Conditions:The most crystal clear sky possible.Dark moon and stars magnitude 6 and fainter are visible with the naked eye.Excellent clean sky,limited star flickering and brilliant objects.
This galaxy's barred like extensions are somewhat too diffuse to see and that this galaxy's oval shape looks like an oval soft glow of faint light with a brilliant nculeus that gently illuminates this galaxy at both 57x and 75x. This galaxy has a somewhat bright nucleus which is condensed.This galaxy measures 4.7'x 2.8'.Chart No.154,NSOG Vol.3.
The Messier objects
The Bennett objects
The Caldwell list
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