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 7233 (17,135 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 7233

NGC 7233, ESO 289-8, LEDA 68441, SGC 221244-4605.8, h 3932, GC 4770

RA: 22h 15m 48.5s
Dec: −45° 50′ 50″

Con: Grus
Ch: MSA:1467, U2:414, SA:23

Ref: SIMBAD

(reference key)

Type: galaxy, SBa

Mag: B=13.44, V=12.82

Size: 1.584′ x 1.412′
PA: 133°

Historical observations

John Herschel (1847) Cape Observations

Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "F, vS, R, 10 arcseconds, the following of two. A sar 8m follows nearly on the parallel, another to the north."

NGC/IC Dreyer (1888, 1895, 1908)

This barred spiral galaxy is described in the NGC as "faint, very small, round, 8th mag star following, following of two." The preceding galaxy is NGC 7232.

Published comments

de Vaucouleurs, G. (1956)

De Vaucouleurs (1956) "Survey of bright galaxies south of -35° declination", Mem. Mount Stromlo, No. 13. (photographic study, plates taken with the 30-inch Reynolds reflector, 20-inch diaphragm); List II, p 68-73.

Bergwall et.al. (1978)

Bergwall et.al. (1978(Astron. Astrophys. Suppl. 33, 243-255) gives this galaxy's B-magnitude in the Johnson system as 13.44. Photoelectric UBV measurements give V=12.819 for a 66'' diaphragm and V=13.631 for a 22'' diaphragm.

Sandage (1975)

Sandage (1975(Astrophysical Journal, 202, 563-582) notes that this galaxy is a member of the NGC 7213 Group. Members include NGC 7213, NGC 7232, NGC 7233 & IC 5181.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a galaxy.

Modern observations

Brian Skiff

15cm - smlr/fntr/Ern of pair w/-32. 140x: 0'.4x0'.2 oval in pa90 w/wk broad

concen, knotty texture. BS, 13Nov1993, LCO.

Contemporary observations

Auke Slotegraaf

1982

A 15.5-inch telescope shows this pair of galaxies in the same field, with NGC 7233 considerably dimmer than its companion. The galaxy appears as an elongated smudge of faint light. Immediately following the galaxy pair are two bright, slightly reddish stars.

Magda Streicher

(no date)

Alldays (22.50S, 20.12E, 770m).

12-inch f/10 SCT (218x, 346x)

NGC 7232 appears as a soft, faint and elongated thin dust lane, with a bright center. To the east two rather lovely yellow 8 magnitude stars follows on the parallel to the north round off the picture. The very faint member NGC 7232B was not visible. In comparison to NGC 7232, NGC 7233 is slightly round and fainter, just east of NGC 7232. To the east two rather lovely yellow 8 magnitude stars round off the picture. The very faint member NGC 7232B was not visible, also call ESO 289-G09?. Brian Skiff I did however manage to find what Magda calls NGC 7232B = ESO 289-G09, but it was too faint in 15cm aperture to see other than a very-low-surface- brightness smudge (total V only ~13 [rather uncertain] and mean surface brightness only muV = 14.4!).

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.