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NGC 4638 (10,108 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 4638

NGC 4638, NGC 4667, MCG+02-32-187, UGC 7880, LEDA 42728, II 70, II 176, h 1402, GC 3171

RA: 12h 42m 47.4s
Dec: +11° 26′ 32″

Con: Virgo
Ch: MSA:724, U2:194, SA:14


(reference key)

Type: galaxy, E-S0

Mag: B=12.1, V=11.1

Size: 2.8′ x 1.6′
PA: 125°

History and Accurate Positions for the NGC/IC Objects (Corwin 2004)

NGC 4638 is probably also NGC 4667, which see. Also see NGC 4637.

Historical observations

William Herschel (c.1784)

Synonyms: H II-176, H II-070

Discovered on March 15, 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He logged it as II-70 and called it "a nebula." On April 17 of the same year he logged II-176, calling it "faint." These two observations refers to the same object, a galaxy in the Virgo Cluster.

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads EON,BM,37NR.

Contemporary observations

Tom Bryant

2008-05-04 22:30:00

Observing site: Pinnacles overlook

Telescope: C-8

[12h 42m 48s, 11 26m 0s] A faint, almost star like, galaxy. There was no sign of the much fainter NGC 4637. Both galaxies appear to be spirals on WikiSky's photographic atlas, although HNGC lists NGC 4638 as an elliptical. Burnham lists it as an E5/S0.

Richard Ford

2013 April, 14th Sunday



Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.

Instrument:12-inch Dobsonian.

This galaxy has the round shape of a tiny minute marble and that this galaxy's central core is only visible as a soft smudge of faint light.However the galactic nucleus of this galaxy is very tight and compact.This galaxy measures 4'x 3.3'.

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