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NGC 7412 (17,457 of 18,816)

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NGC 7412

NGC 7412, AM 2252-425, ESO 290-24, LEDA 70027, MCG-07-47-004, SGC 225254-4254.5, h 3961, GC 4861

RA: 22h 55m 45.2s
Dec: −42° 38′ 28″

Con: Grus
Ch: MSA:1445, U2:415, SA:23

Ref: SIMBAD

(reference key)

Type: galaxy, Sc

Mag: B=12.07, V=11.38

Size: 3.89′ x 3.019′
PA: 65°

Historical observations

John Herschel (1847) Cape Observations

Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "eF, vL, 3' diam at least, it is S.p. a star 7m, 8' distant."

Published comments

Reynolds, J.H. (1921)

Reynolds, J.H. (1921) The spiral nebulae in the zone 40° to 90° (from the Franklin-Adams Plates). MNRAS, 81, 598.

p 600: "The following spirals call for special description on account of their size:

Open, well-defined spiral."

Table, p601: 3x2, "BN, S type"

Helwan Obs. Bulletin No 22 (1921)

pF, 3'x2', E 75deg approx; 2-branched spiral with pF alm.stell.N. and condensations; like the letter 'S'.

Helwan Obs. Bulletin No 38 (1935)

F, 3'x2', E 75deg, 2 branched S spiral with a pF almost stell.N., condensations, confirms HOB 22.

Green, M.R. & Dixon, K.L. (1978)

Green, M. R. & Dixon, K. L. (1978) "Photoelectric photometry of bright southern galaxies", Vol 98, August, p 167-169. They find the V magnitude through a 28'' aperture = 13.55, and through a 80'' aperture = 12.07.

de Vaucouleurs, G. (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).

Sandage, A. (1975) ApJ, 202, 563

Sandage (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 & Tifft (1973)

(Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads S,BM,DIFKNY SSTR BARSUSP.

Shobbrook (1966)

Shobbrook (1966, Mon. Not. R. astr. Soc., Vol 131, p351-363) notes that this member of the Grus Cluster has V = 11.81, B-V = 0.58 and U-B = 0.05. It measures 3.2 by 2.8.

Modern observations

Steve Coe

Steve Coe, observing with a 13" f/5.6, notes: "Pretty faint, pretty large, little brighter in the middle and little elongated (1.5 X 1) in PA 90 at 100X. There is a companion to the west, NGC 7214A, it is very, very faint, small and round and only seen occaisonally, in moments of good seeing."

Brian Skiff

15cm - mod br modlosfcbr gx @ 80x, which is best for viewing. 140x: circ, 3'

diam, reaching 2/3 way to m13.5,14 pair SE amd m14 * SW. classic mod

broad concen w/o discernable core or nuc. BS, 14Nov1993, LCO.

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