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NGC 5101 (11,362 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 5101

NGC 5101, AM 1319-271, ESO 508-58, LEDA 46661, MCG-04-32-008, SGC 131901-2710.2, UGCA 351, II 567, h 3493, GC 3503

RA: 13h 21m 46.62s
Dec: −27° 25′ 53.4″

Con: Hydra
Ch: MSA:890, U2:330, SA:21


(reference key)

Type: galaxy, SBr...

Mag: B=11.52, V=10.47

Size: 5.623′ x 4.466′
PA: 124°

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Sketches  (1)

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Photos  (1)

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Historical observations

William Herschel (c.1784)

Synonyms: H II-567

Discovered in 1786 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, pL, iF, gbM."

John Herschel (1847) Cape Observations

Observed by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "vB, pmE, gmbM." On a second occassion he called it "B, R, pL, psmbM to a star."

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads BBAR&NUC,SSTRSUSP&RG.

Sandage, A. (1961) The Hubble Atlas of Galaxies

This galaxy appears on page 42 of "The Hubble Atlas of Galaxies" by Allan Sandage (1961, Washington, DC).

de Vaucouleurs, G. et al. (1991) Third Ref. Cat. of Bright Galaxies (RC3)

This galaxy is listed in the "Third Reference Catalogue of Bright Galaxies" as having an outer ring of 5.15 arcminute diameter.

Photo index

Photo Index by Jim Lucyk: Hubble Atl.of Gal. (Sandage 1961) p42, Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p10.3.

Modern observations

Walter Scott Houston

Houston includes this galaxy in his Hydra Hysteria. He calls it "big, but faintish ... I estimate it to shine with the total light of a 10.9 mag star, but the surface brightness is low."

Tom Lorenzin

Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12M; 4' diameter; see photo at HAG-42; located 1 degree ESE of N5061; while in the area, look for 12M SP GAL N5078 (3'x 1' extent) 30' to W and a bit N, just past a 7M star."

Steve Coe

Steve Coe (1992, The Deep-Sky Observer, Webb Society, Issue 1) observing with a 17.5-inch f/4.5 at 100x notes: "pB, pS, somewhat elongated, stellar core, bar structure with averted vision."

Steve Coe

Steve Coe, observing with a 17.5" f/4.5 at 100X, notes: "Pretty bright, Pretty small, somewhat Elongated, stellar core, bar structure with averted vision

Brian Skiff

15cm - fairly br oval @ 80x w/m12 * on W. brtr than N5078 to W, sim in size.

140x: seems elong parallel to -78, though not so elong. 1'.75x1'.25 with

mod even concen to non*ar center. BS, 28Feb1990, LCO.

Contemporary observations

Auke Slotegraaf

2009 January 29

Sutherland (Huis Lana)

"Bertha" 12-inch f/4.8 Dobsonian (EP: 32mm, 25mm, 10mm, 6.3mm Plossls, 2x Barlow, 32mm Erfle)

Conditions: Clear, dark.

Four and a bit degrees south of 3rd-mag gamma Hydrae. 47x: Pretty small, round glow, growing brighter to the centre. Makes a narrow right-angled triangle with two field stars (sketch); hypotenuse is 6 arcmin long. 120x: Not faint, brighter to the middle, elongated N-S (1:2.5), 1.0' x 0.4'. (D: 20090129/30. Own star charts)

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The Messier objects

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