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Full database:

Entire DOCdb database of 18,816 objects.



NGC 5739 (12,612 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 5739

NGC 5739, LEDA 52531, MCG+07-30-052, UGC 9486, I 171, h 1873, GC 3984

RA: 14h 42m 28.99s
Dec: +41° 50′ 32.1″

Con: Bo÷tes
Ch: MSA:606, U2:77, SA:7


(reference key)

Type: galaxy, S0/Sa

Mag: B=13.7, V=?

Size: 1.819′ x 1.548′
PA: 42°

Historical observations

William Herschel (c.1784)

Synonyms:H I-171

Discovered in 1787 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "cB, S, R, resolvable, mbM."

Published comments

Burnham's Celestial Handbook

Burnham calls it a 13.1 mag spiral galaxy in Bootes, measuring 1.1' x 0.9', which is pretty bright, small, round and suddenly much brighter in the middle.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads R,SLDIF,SMBM,HISB DKLNS SUSP.

Modern observations

Steve Coe

Steve Coe, using a 13" f/5.6, notes: "Pretty faint, pretty small, round, somewhat brighter middle with a stellar nucleus at 100X. There is a 13th mag star about 10" south of the core."

Brian Skiff

RC3: B=13.0/14.6

POSS: core pa28. sketch w/fld *s on card.

15cm - not vis.

- mod f gx w/sev m14.5 *s inv or nr it @ 80x. 140x: 1' diam and ~circ, but hard to tell due to m14.5 * just w/in NE edge. three more m14.5-15 *s in SE quad. mod even concen. seems to have some struc, but may be illusory due to sup *. BS, 17May1991, Texas Star Party.

25cm - mod f, elong? pa45, 1'.25x0'.6. round br core w/*ar nuc. on NE tip is m14 *, another to SE poss dbl.

30cm - 149x: sm, pretty well concen to sub*ar nuc. NE 1' is *. 238x: vsm, 30" diam w/good concen. many *s following.

Favourite lists

Lacaille's catalogue

The Messier objects

Dunlop's catalogue

The Bennett objects

The Caldwell list

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