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NGC 4742
NGC 4742, LEDA 43594, MCG-02-33-032, UGCA 303, I 133, h 3432, GC 3262
Type: galaxy, E...
Mag: B=12, V=?
Size: 2.187′ x 1.38′
PA: 75°
Historical observations
William Herschel (c.1784)
Synonyms: H I-133
Discovered in 1786 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "cB, vS, BN."
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 "a star 9th mag,with a strong burr about a very small extent; diameter 10 arcseconds. It is the best specimen of the class of 'stellar nebulae' that I remember to have seen. A star S.f. 10th mag, distance 1.5'; has no burr."
This galaxy is a member of the Virgo Cluster.
Published comments
Sulentic & Tifft (1973)
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads E,EL,BM.
Helwan Obs. Bulletin No 15 (1915)
vBN, surrounded by atmosphere.
Helwan Obs. Bulletin No 21 (1920)
Spindle with vBN - near edge of plate.
Helwan Obs. Bulletin No 38 (1935)
Confirms HOB 15
Modern observations
Steve Coe
Steve Coe, observing with a 13" f/5.6, notes: "faint, small, much brighter middle with a small nucleus at 165X. Averted vision helps a lot on this object."
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Favourite lists
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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