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NGC 833
NGC 833, Arp 318, HCG 16b, LEDA 8225, MCG-02-06-030, II 482, h 199, h 2463, GC 495
Type: galaxy (AGN LINER-type), Sab
Mag: B=14, V=?
Size: 1.659′ x 0.707′
PA: ?
Image gallery
Sketches (2)
Select a sketch and click the button to view
Historical observations
William Herschel (c.1784)
Synonyms: H II-482
Discovered in November 1785 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "Four. The preceding two [NGC 833 & NGC 835] both F, E, S, within 1' distance, in the parallel. The following two [NGC 838 & NGC 839] both pF, pS, E, about 2' distant and nearly in the direction of the meridian."
John Herschel (1847) Cape Observations
Observed by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "eF, S, R; first of a group of four."
Ellery, R.L.J. (1885) Melbourne Observations
Recorded in "Observations of the Southern Nebulae made with the Great Melbourne Telescope".
See the discussion of Lithograph M.1.7 for the details.
Birr Castle/Lord Rosse
An observer using the 72-inch f/8.8 speculum telescope at Birr Castle noted "[NGC 833, NGC 835, NGC 838 and NGC 839] Nov. 29, 1856. All are S, R, bM."
Published comments
Helwan Obs. Bulletin No 9 (1912)
F, S, vmE 80deg, spindle with nucleus.
Arp (1966)
This group consists of NGC 833, NGC 835, NGC 838 and NGC 839. The grouping is listed as No. 318 in Arp's "Atlas of Peculiar Galaxies" (Astrophysical Journal Supplement, vol. 14, 1966.) He remarks "faint, diffuse streamers, peculiar galaxies."
Sulentic & Tifft (1973)
The RNGC (Sulentic and Tifft 1973) notes that this is a 14.0 mag galaxy. Their coded description reads SLIRREL,BM,SLDIF.
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Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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