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NGC 5523 (12,208 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 5523

NGC 5523, LEDA 50895, MCG+04-34-008, UGC 9119, III 134, h 1762, GC 3818

RA: 14h 14m 52.45s
Dec: +25° 19′ 3.1″

Con: Bo÷tes
Ch: MSA:672, U2:152, SA:7


(reference key)

Type: galaxy, Sc

Mag: B=13.4, V=?

Size: 4.168′ x 1.479′
PA: 99°

Historical observations

William Herschel (c.1784)

Synonyms: H III-134

Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "vF, pL, E, lying along the parallel of the declination, resolvable."

Published comments

Burnham's Celestial Handbook

Burnham calls it a 12.8 mag spiral galaxy in Bootes, faint, pretty large (5.0'x0.8'), much elongated, nearly edge-on.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads EL,BM,MINC,DIFPERIPH PCHY COMPLEX PERIPH STR.

Modern observations

Steve Coe

Steve Coe, using a 13" f/5.6, notes: "Faint, pretty large, much elongated (3 X 1) in PA 90 and brighter in the middle at 100X."

Brian Skiff

RC3: B=12.6/14.4

POSS: pa93. m10 * 2'.5 NW. three well sep m14 *s on E, but not in arc as

obs'd (15cm 1988 obs).

UGC: pa99.

NGC: pa90.

15cm - not vis.

- mod f spindle vis @ 80x. 140x: pa85, 3'.5x1', pointy tips. m10 * 1'.2 NW.

mod even concen to oval 45"x20" core and occas vis f sub*ar nuc or circ

pip 10" across. neb patch to E off tip must be arc of threshold *s with

another m13.5 * nrby. BS, 20May1988, Anderson Mesa.

- pretty f @ 80x 2'.5 SE of m10 *. losfcbr. 140x: 3'x0'.6 in pa95 w/wk

broad concen to wk oval 30"x20" core. occas suspect dk cut immed E of

core. def longer than sep to m10 * NW. BS, 7Jun1991, Anderson Mesa.

25cm - f and diffuse.

- fairly f in pa75. round core, inconsp. skinny triangles at each end of

core, each 1.5 times as long as core. size difficult to estimate due to


30cm - pretty f, vlosfcbr. sl broad concen w/indef edges. 1'.5 diam, round with

occas glimpses to 2'.5x1'.5 in pa E-W. CBL, Roof.

Contemporary observations

Magda Streicher

(no date)

Alldays (22.50S, 20.12E, 770m).

12-inch f/10 SCT (218x, 346x)

Very faint but I can see it is elongated from E to W 3-4' in size. Very hazy with a low surface brightness, slightly brighten to a not so round core. Two brighter stars West.

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