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Type: galaxy, SBb
Mag: B=11.8, V=11.02
Size: 3.89′ x 2.29′
PA: 150°
Sketches (1)
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Photos (1)
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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, psbM, 3' long, 2' broad; either Binuclear or more extended on the N.f. side than on the opposite. No other neb. near it." On a second occassion he called it "B, L, pmE, vsmbM; 100 arcseconds long, 60 arcseconds broad; Unequally bright and exhibiting an approach to the Binuclear form." Herschel tentatively identifies it as Dunlop 519.
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]
This object was observed by James Dunlop from Paramatta, New South Wales, with a 9-inch f/12 telescope. He described it as "a faint nebula, of an irregular round figure, about 30 arcseconds diameter, north of a bright small star."
Recorded in "Observations of the Southern Nebulae made with the Great Melbourne Telescope".
See the discussion of Lithograph M.1.8 for the details.
vF, pL, E 40deg, probably spiral."
De Vaucouleurs (1956) "Survey of bright galaxies south of -35° declination", Mem. Mount Stromlo, No. 13. On photos taken with the 30-inch Reynolds reflector, 20-inch diaphragm: bright inner part 2.3' x 2.1', faint outer regions 4' x 3.2'. Remarks: very remarkable. vBN 0.25'
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads S,B,BM,SHORTDIF ARMS.
Photo Index by Jim Lucyk: Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p8.4.
Steve Coe, observing with a 13" f/5.6, notes: "Pretty bright, pretty large, elongated 2 X 1 in PA 30, suddenly much brighter in the middle at 135X."
POSS: 7'.7 N of m9 *. pair 9' N: 11,11; 12"; pa273, forms skinny S-pointing triangle w/m10.5 * 65" S. gx bar in pa60.
ESO: pa150 overall.
15cm - br oval w/sharp cen @ 80x. 140x: 2'x1' in pa45. mostly mod broad concen except for ridge along maj axis, 1'x0'.1, which has 5" circ core and *ar nuc. seem to be br knots on either side of nuc on maj axis and sfc generally mottled. BS, 14Nov1993, LCO.
30cm - 8' N of m9 *, halfway to pair 1'.5 apart. 1'.8x0'.8 in pa40. tapering ends. sm 10" core showing *ar nuc w/averted vis. pretty well concen.
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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