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NGC 4643 (10,134 of 18,816)

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NGC 4643

NGC 4643, LEDA 42797, MCG+00-33-005, UGC 7895, I 10, h 1404, GC 3176

RA: 12h 43m 20.3s
Dec: +01° 58′ 39.2″

Con: Virgo
Ch: MSA:772, U2:239, SA:14

Ref: SIMBAD

(reference key)

Type: galaxy (AGN LINER-type), SB0

Mag: B=11.9, V=?

Size: 3.162′ x 2.818′
PA: 130°

Historical observations

William Herschel (c.1784)

Synonyms: H I-010

Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it ""vB pL lE gmbM, 2'long, 1.5' broad."

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads BNUC&BAR,VFDIF HALO SBO)).

Sandage, A. et al. (1975) Galaxies and the Universe

G. de Vaucouleurs ("Galaxies and the Universe", Chapter 14 - Nearby Groups of Galaxies) notes that the five brightest members of the Virgo X group, a part of the Virgo II cloud complex, are NGC 4303, NGC 4636, NGC 4536, NGC 4517 & NGC 4643.

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).

Photo index

Photo Index by Jim Lucyk: Hubble Atl.of Gal. (Sandage 1961) p42.

NGC 4647-4649, Deep Sky #22 Sp88 p35, Astronomy mag. 3/77 p20.

Modern observations

Steve Coe

Steve Coe, observing with a 13" f/5.6, notes: "Pretty bright, pretty large, much brighter middle, little elongated 1.2 X 1 in PA 135 at 135X."

Tom Lorenzin

Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "11.6M; 1.7' x 0.8' extent; bright, small, NW-SE-oriented oblong with much brighter center; see photo at HAG-42; 9M star 12' NNE."

Contemporary observations

Tom Bryant

2011 6 3 23:55:37

Observing site: Little Bennett Regional Park

Telescope: C-11

[12h 43m 18s, 1 59m 0s] Bright nucleus, off centered envelop. B: SBa. WikiSky: No asymmetry seen.

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