sponsored by psychohistorian.org


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.


log in to manage your observing lists























Full database:

Entire DOCdb database of 18,816 objects.



NGC 7755 (18,034 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




finder chart

altitude today

altitude (year)


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 7755

NGC 7755, AM 2345-304, ESO 471-20, LEDA 72444, MCG-05-56-014, SGC 234515-3048.0, UGCA 443, h 4005, GC 5012

RA: 23h 47m 51.8s
Dec: −30° 31′ 19″

Con: Sculptor
Ch: MSA:1399, U2:350, SA:23


(reference key)

Type: galaxy, SBbc

Mag: B=12.1, V=11.36

Size: 3.63′ x 2.691′
PA: 20°

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 "B, L, R, psbM, 2' diam." On a second occassion he called it "B, L, R, psmbM, 90 arcseconds diam."

Published comments

Helwan Obs. Bulletin No 15 (1915)

F, 1'x1', R, pBN, open spiral.

Helwan Obs. Bulletin No 30 (1924)

vF, 4'x3', lE 30deg approx., stell. nucleus, spiral with condensations.

Green, M.R. & Dixon, K.L. (1978)

Green, M. R. & Dixon, K. L. (1978) "Photoelectric photometry of bright southern galaxies", Vol 98, August, p 167-169. They find the V magnitude through a 28'' aperture = 13.19, and through a 80'' aperture = 12.24.

Sulentic & Tifft (1973)

(Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads SB,RG,NARM PDVDIF SEV BKNS IN RING.

Photo index

by Jim Lucyk: Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p1.3.

Modern observations

Steve Coe

Steve Coe, observing with a 17.5" f/4.5 at 100X, notes: "Pretty faint, pretty small and roundish, slightly brighter middle at 135X.

Brian Skiff

15cm - mod f @ 80x. 140x: ~circ, 1'.5 diam w/mod even concen to mod sub*ar

nuc. m15 *(?) on W edge. BS, 15Nov1993, LCO.

Contemporary observations

Magda Streicher

1998 August

Galaxy, Sculptor

Location: Campsite (23 16 South - 29 26 East).

Telescope: Meade 8" 18mm eyepiece, 36 arcmin f.o.v.

Date: August 1998.

Sky conditions: Not very good.

Description: Very faint, roundish tinge of light, about 3 arc minutes in size. Galaxy growing slowly brighter to the middle with a halo of haze around it. Stars play double in the field of view.

Favourite lists

Lacaille's catalogue

The Messier objects

Dunlop's catalogue

The Bennett objects

The Caldwell list

Named DSOs

Object search

First search phrase


Second search phrase

Type of object to include:

open cluster
globular cluster
planetary nebula
bright nebula
dark nebula
galaxy cluster
asterism & stars

The Bug Report

DOCdb is still in beta-release.

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

> Bug Report


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

> Contact us


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.