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 3184 (6,813 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

NGC 3184

NGC 3184, LEDA 30087, MCG+07-21-037, UGC 5557, I 168, h 688, h 689, GC 2052, GC 2053

RA: 10h 18m 17s
Dec: +41° 25′ 26″

Con: Ursa Major
Ch: MSA:617, U2:72, SA:6

Ref: SIMBAD

(reference key)

Type: galaxy, Sc

Mag: B=10.4, V=?

Size: 7.943′ x 7.585′
PA: 135°

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

NGC 3184. See NGC 3180.

Historical observations

William Herschel (c.1784)

Synonyms: H I-168

Published comments

Supernovae

Three supernovae erupted in this galaxy; 1921 (10.7p), 1921 (11.0p), 1937 (13.2p)

Photo index

by Jim Lucyk: Sky&Tel. 3/87 p347, Sky&Tel. 9/86 p249, Sky&Tel. 12/86 p583, Astronomy mag. 4/84 p78, Burnhams V3 p1961, Astronomy mag. 12/87 (inside cover).

Sulentic & Tifft (1973)

(Sulentic and Tifft 1973) notes that this is a 11.0 mag galaxy. Their coded description reads SC,B,R,2WDKNARMS KNDIF HALO.

de Vaucouleurs, G. (1975) NGC 3184 Group

de Vaucouleurs, G. (1975) Nearby groups of galaxies. In: Kuiper, G. (ed) Stars and Stellar Systems. Volume 9: Galaxies and the Universe. Chapter 14, p557.

A few late-type spirals with fairly large diameters and consistent velocities stand out in Leo Minor in the foreground of more distant clouds ... [ see Table 4] cover an area 10°x5°. Two more (NGC 3344 and NGC 3510) 10° south of the group .. might be included as possible members."

Sandage & Tammann (1975)

Sandage, A. & Tammann, G. A. (1975) Steps toward the Hubble constant. V - The Hubble constant from nearby galaxies and the regularity of the local velocity field. ApJ, 196, 313-328. [1975ApJ...196..313S]

(1975, Astrophysical Journal, 196, 313-328) includes this galaxy in the NGC 3184 Group. Members include NGC 3184, NGC 3198, NGC 3319 & NGC 3432.

Modern observations

Walter Scott Houston

Houston notes that this galaxy appears brighter to him that its catalogued value of 12.1. He has been able to see it with a 5-inch Moonwatch scope. It has been described as very diffuse with an 11th mag star on its northern edge, as seen in a 6-inch. There is a red 7th mag star 10' to the west.

Tom Lorenzin

Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "10.5M; 5.5' diameter; soft glow with no center condensation; Mu UMA in same wide field to W; bright star 6' WNW of core is 7M SAO 43270; !good supernova prospect!."

Contemporary observations

Tom Bryant

2009-04-17 22:30:00

Observing site: Pinnacles overlook

Telescope: C-11

[10h 18m 18s, 41 25m 0s] A large, face on Sc with a small, faint nucleus. (Burnham: Sc)

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.