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NGC 1531 (2,835 of 18,816)

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NGC 1531

NGC 1531, ESO 359-26, LEDA 14635, MCG-05-11-001, SGC 041004-3258.6, h 2620, GC 822

RA: 04h 11m 59.17s
Dec: −32° 51′ 2.9″

Con: Eridanus
Ch: MSA:377, U2:356, SA:19

Ref: SIMBAD

(reference key)

Type: galaxies (interacting), S

Mag: B=12.9, V=?

Size: 1.38′ x 0.954′
PA: 122°

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Sketches  (1)

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Historical observations

John Herschel

John Herschel recorded it as "faint, round, brighter in the middle, 60 arcseconds. The preceding of two." On a second occasion he called it "bright, round, pretty suddenly brighter in the middle, 60 arcseconds; the N.p. of two." During the next sweep he saw it as "pretty bright, round, pretty suddenly a little brighter in the middle; pos with the following neb = 317.9 degrees." This latter nebula is NGC 1532.

Published comments

Helwan Obs. Bulletin No 9 (1912)

B, pS, lE, bM.

Photo index

Photo Index by Jim Lucyk: Sky&Tel. 6/88 p606, Deep Sky #5 Wi83 p20, Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p1.5.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy. Their coded description reads E,SLEL,BM.

Modern observations

Walter Scott Houston

Houston obsered this galaxy with 60x 5-inch binoculars as "one of a hard-to-see pair of galaxies in an easy-to-find field . . . [about 2' northwest of NGC 1532.] Since this object is at least a magnitude fainter and only about 1' in diameter, 60x was required."

Hartung, E.J. (1968) Astron.Obj.South.Tel

Hartung notes that "this fine field with a few scattered stars contains two bright nebulae, one somewhat elliptical about 1' long and almost at a right angle to the immediately following long narrow spindle with round bright centre, and about 5' x 1' in pa 35 deg. Both objects are visible with 10.5cm."

Steve Gottlieb

04 12.0 -32 51

13: moderately bright, small, slightly elongated. Forms a close pair with larger and brighter N1532 1.6' SE.

Steve Coe

Steve Coe, observing with a 13" f/5.6, notes: "Pretty bright, round, pretty small and brighter in the middle at 135X."

Brian Skiff

ESO: pa122.

15cm - not vis.

- fairly f gx @ 80x next to vlg spindle N1532. 140x: 25"x15" elong SE-NW, i.e. points at nuc of -32. mod even concen, but knotty. V=14.9 * (T&B) vis to W. BS, 17Nov1993, LCO.

25cm - elong pa90, 1'x0'.3. no cen concen.

30cm - rel sm comp to -32. mod concen to f occas *ar nuc. 1'.2x1', poss in pa100.

Contemporary observations

Auke Slotegraaf

2009 January 02

Sutherland (Radar Dome Quarry)

8-inch f/6 Dobsonian

Conditions: Clear, dark.

Within the great eastward bend of Eridanus the River lie a host of galaxies. A personal favourite is the duo of NGC 1531 & NGC 1532, an easy star-hop from upsilon-4 Eridani. These distinct nebulae, within an obvious triangle of stars, are readily seen at 48x. The pair make a lovely contrasting grouping, floating in space. NGC 1531 initially appears round but is actual slightly elongated, oriented almost directly towards NGC 1532. It becomes noticeably brighter towards the middle.

Tom Bryant

2010 11 5 4:5:54

Observing site: Fall Star Party

Telescope: C-11

[4h 12m 0s, -32 51' 0"] A faint, nondescript companion to 1532. B: E3.

Richard Ford

2012 February 19, Sun

Location:Perdeberg.

Instrument:12-Inch Dobsonian Reflector Telescope.

Time:00:00.

Sky Conditions:The fainter parts of the Milky Way are barely visible.

Transparency Of the Sky:Haziness only visible on the horizon.

Seeing:Atmosphere stable with little interference.

This galaxy's elongated elliptical shape is just visiblw as a faint smudge of light which is oval and well defined.However the nucleus of this galaxy has also an oval shape.The nucleus of this galaxy is equally bright all over.

It measures 3.5'*0.8'.

Challenge Rating:Difficult.

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