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NGC 7174 (16,990 of 18,816)

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NGC 7174

NGC 7174, ESO 466-40, HCG 90d, LEDA 67881, MCG-05-52-010, SGC 215912-3214.0, h 3910, GC 4731

RA: 22h 02m 6.82s
Dec: −31° 59′ 36.5″

Con: Piscis Austrinus
Ch: MSA:1404, U2:383, SA:23

Ref: SIMBAD

(reference key)

Type: galaxies (interacting), Im

Mag: B=13.05, V=12.15

Size: 1.584′ x 0.758′
PA: 88°

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Remarks

A 12th magnitude galaxy, about 1' across, in Pisces Austrinus. Part of a tight bunch of three galaxies, NGC 7173 & NGC 7176. A fourth, more prominent galaxy, NGC 7172, is part of the quartet.

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 "In sweep 493 this was taken for a vF star, but I now perceive it plainly to be a small faint round nebula."

Published comments

Helwan Obs. Bulletin No 9 (1912)

pF, pS, mE 90deg, a curved spindle with nucleus.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads E,R,BM.

Helwan Obs. Bulletin No 22 (1921)

pB, 70''x10'', E 85deg; spiral seen edgewise, alm.stell.N.; ? s.portion of nebula absorbed.

Modern observations

Bahr-Vollrath, Gerd (1993)

Gerd Bahr-Vollrath (Noosa Heads, Queensland, Australia) writes in the The Webb Society Nebulae and Clusters Section Report No. 11, January 1993: "[NGC 7172-3-4] A close trio of small, faint galaxies. All three appear as indistinct, faint glows. (8-inch f/12 SCT)"

Clarke, W.P. (1993)

William P. Clarke (San Diego, California, USA) writes in the The Webb Society Nebulae and Clusters Section Report No. 11, January 1993: "A group of four galaxies [NGC 7172, 7173, 7174 & NGC 7176] bunched together, the brightest being NGC 7172, which is the northernmost of the group. This object is extended E-W, with a bright nucleus. NGC 7173 is 3.4' south; it is nearly round and has a bright centre. NGC 7174 & 7176 are just S.f. NGC 7173; they are close enough together that their halos merge. Only the two bright nuclei allow them to be distinguished. (17.5-inch Newtonian, x227)"

Brian Skiff

NGC 7176

15cm - -76 is brtst of trio incl -73 & -74. -74 is *-like spot w/sm halo inv

w/-76 on its WSW side. -76 has vbr *ar nuc. the two gxs in common halo.

BS, 15Nov1993, LCO.

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