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NGC 5546 (12,259 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 5546

NGC 5546, LEDA 51084, MCG+01-36-035, UGC 9148, III 551, h 1770, GC 3835, GC 3836

RA: 14h 18m 9.31s
Dec: +07° 33′ 51.1″

Con: Bo÷tes
Ch: MSA:744, U2:197, SA:14


(reference key)

Type: galaxy (in group), E

Mag: B=14.1, V=?

Size: 1.479′ x 1.23′
PA: 20°

Historical observations

William Herschel (c.1784)

Synonyms: H III-551

Discovered on May 1, 1786 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "Two [NGC 5546 & NGC 5549] Both eF, vS. The place is that of the following. The first precedes the last 3 or 4'." In the Notes to the 'Catalogue of a Second Thousand of New Nebulae and Cluster of Stars' a comment reads: "The distance was underestimated, if they were h.1770 and h.1772, delta R.A. of which is 30 seconds, the second being 11' south. A second observation of May 12, 1793 (Sweep 1042) has only one, pB, S, BN. This agrees perfectly with the correct place of h.1772 and differs only 2' from the first observation. It is, however, very probably that H. in 1786 observed NGC 5542 and NGC 5546 (h.1770), 4' pf., but in that case his RA was 30 seconds too great and P.D. 12' too great. He adds: 'A little inaccurate. I would not stay to verify it properly, so that there remains some little doubt.' "

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 14.0 mag galaxy. Their coded description reads E,R,BM.

Modern observations

Albino, Adam (IAAC)

Observer: Adam Albino Your skills: Intermediate (some years) Date/time of observation: 5/20/98 LMT=9:36, UT=2:36 Location of site: Norwell, MA (Lat 42m 16.9s, Elev ) Site classification: Exurban Sky darkness: 5.5 Limiting magnitude Seeing: 7 1-10 Seeing Scale (10 best) Moon presence: None - moon not in sky Instrument: 8" f/10 Ultima 8 PEC SCT - 80mm Mak f/10 Magnification: 45, 96,169,406 Filter(s): UHC Object(s): NGC 5546 Category: External galaxy. Constellation: Vir Data: mag 12.3 size 1.3'x1.1" Position: RA 14:18.1.5 DEC 07:3449

Description: "Stumbled across this rather bright galaxy which I had never viewed before while star hoping. Unexpectedly large with a mottled surface texture. Gave me the appearance of an IR galaxy. Some brightening of the core, but very slight and evenly. Atlas shows many faint galaxies in FOV (around mag 15+) but out of reach for the 8"."

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