sponsored by psychohistorian.org

DOCdb

Deep Sky Observer's Companion – the online database

 

Welcome, guest!

If you've already registered, please log in,

or register an observer profile for added functionality.

List:

log in to manage your observing lists

 browse:

 

 position:

 

 next:

 

 options:

summary

rename

prune

trim

remove

close

copy

combine

plan

bookmark

load

new

delete

marathon

favourite!

Full database:

Entire DOCdb database of 18,816 objects.

 browse:

 position:

NGC 4374 (9,368 of 18,816)

 next:

oc gc pln bn dn gx gxcl ast aka lost

Object:

list

bookmark

finder chart

altitude today

altitude (year)

 search:

½°, , in DOCdb


Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/yivumoo/public_html/show_object.php on line 167

show browsing

Messier 84

NGC 4374, LEDA 40455, MCG+02-32-034, MRC 1222+131, Markarian Chain, Messier 84, h 1237, GC 2930

RA: 12h 25m 3.74s
Dec: +12° 53′ 13.1″

Con: Virgo
Ch: MSA:725, U2:193, SA:13

Ref: SIMBAD

(reference key)

Type: galaxy (Seyfert 2), E...

Mag: B=10.8, V=8.67

Size: 6.025′ x 5.37′
PA: 135°

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

NGC 4374. See NGC 4443.

Historical observations

William Herschel (c.1784)

In the Appendix to the 1912 'Scientific Papers of Sir William Herschel' this object is described as "1784, April 17. A bright nebula [The only observation]."

Published comments

Sulentic & Tifft (1973)

(Sulentic and Tifft 1973) notes that this is a 11.0 mag galaxy. Their coded description reads BE,R,BM.

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 I (E) group are NGC 4472, NGC 4649, NGC 4486, NGC 4382 & NGC 4374.

Markarian (1961)

(1961, Astronomical Journal, Volume 66, p555-557) suggests that this galaxy is part of a slightly bent physical chain of galaxies extending over about 1.5 degrees in the Virgo cluster. The eight galaxies forming this chain are NGC 4374, NGC 4406, NGC 4435, NGC 4438, NGC 4458, NGC 4461, NGC 4473 & NGC 4477. Markarian reaches the conclusion, based on a probabilistic argument, that "the chain of galaxies in the Virgo cluster is not a chance grouping but a real physical system."

Bailey, S.I. (1908)

"nebula, somewhat B at centre, somewhat elongated; spiral?"

Bailey, S.I. (1908) A catalogue of bright stars and nebulae. Ann.Harv.Coll.Obs., 60(8), 199.

Supernovae

A supernova erupted in this galaxy in 1957 (12.2p)

Modern observations

Walter Scott Houston

Notes: "Its 9th mag disk is about 2' across, and John Mallas commented that it resembled an unresolved globular cluster in his 4-inch refractor."

Tom Lorenzin

Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "10M; 4' diameter; 17' W and a little S of M-86; bright, large and round with brighter center; N4388's slash is 17' to SSE; EL GAL N4387 (12.5M; 2' x 1' extent) 7' ESE in center of triangle formed by M-84-86-N4388; NINE galaxies in 1 degree field centered on M-84-86 comprise the "NONET"; most are !good supernova prospects!."

Steve Coe

Coe, observing with a 13" f/5.6, notes: "(M84) very bright, large, irregularly round, bright middle. This is the beginning of the Markarian chain, the central section of the Virgo-Coma cluster of galaxies."

AJ Crayon

Crayon, using an 8" f/6 Newtonian, notes: "(M 84) is an elliptical galaxy. It is 10' 9m and has a suddenly much brighter 3' middle, at 80X."

Contemporary observations

Richard Ford

2010 May,15 Saturday

Location:Perdeberg.

Instrument:12"Dobsonian Reflector Telescope.

Sky Conditions:The fainter parts of the Milky Way are barely visible.

Transparency of the Sky:Haziness only visible on the horizon.

Seeing:Atmosphere stable with little interference.

Limiting Magnitude:4.9.

First Impression:Galaxy.

Location:Virgo.

Time:10:15pm.

Chart Number:No.11(Extract taken out of "Atlas of the Night Sky").

Size:26mm Eyepiece:Field Of View:57'/9=6.3'.

20mm Eyepiece:Field Of View:50'/8=6.2'.

6.3'+6.2'=12.5'.

12.5'/2=6.2'.

Size in Arc Minutes:6.2'.

Brightness:Bright.

Brightness Profile:Low Surface Brightness.

Challenge Rating:A Breathtaking sight to observe in a large telescope under dark skies.

Description

-----------

This galaxy is oval and well defined as a large elliptical galaxy.This galaxy has a bright brilliant nucleus.This galaxy's structure has the appearance of a flat rugby ball.This galaxy's appearance in overall is bright.Although this galaxy is bright as most galaxies are concerned.No dark dust lanes are observed.Close to this galaxy I have found a few 12th to 13th magnitude stars within this vicinity.No darker areas have been observed around this galaxy.No areas of uneven brightness are observed around this galaxy.This galaxy has areas of even brightness all over.

Tom Bryant

2007-05-11 23:00:00

Observing site: Pinnacles overlook

Telescope: C-8

[12h 25m 6s, 12 53m 0s] Bright Elliptical in Virgo in a spectacular field with M86, N4338 and N4387.

Favourite lists

Lacaille's catalogue

The Messier objects

Dunlop's catalogue

The Bennett objects

The Caldwell list

Named DSOs

Object search

First search phrase

    and

Second search phrase

Type of object to include:

open cluster
globular cluster
planetary nebula
bright nebula
dark nebula
galaxy
galaxy cluster
asterism & stars
unverified/lost
nova

The Bug Report

DOCdb is still in beta-release.

Known issues, feature requests, and updates on bug fixes, are here:

> Bug Report

Feedback

Found a bug? Have a comment or suggestion to improve DOCdb? Please let us know!

> Contact us

Help!

DOCdb is a free online resource that exists to promote deep sky observing.

You could help by sharing your observations, writing an article, digitizing and proof-reading historical material, and more.

> Find out more

Everything on DOCdb.net is © 2004-2010 by Auke Slotegraaf, unless stated otherwise or if you can prove you have divine permission to use it. Before using material published here, please consult the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License. Some material on DOCdb is copyright the individual authors. If in doubt, don't reproduce. And that goes for having children, too. Please note that the recommended browser for DOCdb is Firefox 3.x. You may also get good results with K-Meleon. Good luck if you're using IE. A successful experience with other browsers, including Opera and Safari, may vary.