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 1255 (2,258 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

Warning: fopen(/home/yivumoo/public_html/logs/showobject/20211018.txt): failed to open stream: Disk quota exceeded in /home/yivumoo/public_html/show_object.php on line 168

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/yivumoo/public_html/show_object.php on line 181

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/yivumoo/public_html/show_object.php on line 182

show browsing

NGC 1255

NGC 1255, AM 0311-255, ESO 481-13, LEDA 12007, MCG-04-08-050, SGC 031122-2554.6, UGCA 60

RA: 03h 13m 32.04s
Dec: −25° 43′ 30.6″

Con: Fornax
Ch: MSA:357, U2:311, SA:18


(reference key)

Type: galaxy (in cluster), SBb/Sc

Mag: B=11.62, V=?

Size: 4.073′ x 2.511′
PA: 115°

Historical observations

Barnard, E.E. (1884)

New nebulae - Small black hole in the milky way - Duplicity of beta-1 Capricorni. Astron. Nachrichten, 108, 369-372.

object "b" "Faint nebula, not large, pretty even in light. A faint star close p. and slighty s. probably involved. A 6m star is 30'approx s. and f. the nebula. The place is the mean of two Equatorial pointings."

NGC/IC Dreyer (1888, 1895, 1908)

This galaxy was discovered by E.E. Barnard (6-inch refractor, Nashville, Tennessee) and Ormond Stone (26-inch refractor, McCormick Observatory, Virginia).

The NGC calls it "faint, pretty large, faint star close preceding."

Published comments

Photo index

by Jim Lucyk: Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p8.11.


Erupted in this galaxy in 1980 (17.0p).

Sulentic & Tifft (1973)

(Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads S,SLEL,DIF,BM,KNY DKLNS VIS.

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]

Includes this galaxy in the Eridanus Group. Members include NGC 1187, NGC 1201, NGC 1232, NGC 1255, NGC 1297, NGC 1300, NGC 1302, NGC 1325, NGC 1325A, NGC 1331, NGC 1332, NGC 1353, NGC 1359, NGC 1371, NGC 1385, NGC 1395, NGC 1398, NGC 1407, NGC 1415, NGC 1426, NGC 1439 & IC 1953.

Modern observations

Tom Lorenzin

Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12.1M; 3.5'x 2.2' extent; faint glow; use field motion to aid perception; little, if any, center brightening noted; 25' NW of bright star (6.2M) SAO 168406."

Steve Coe

Steve Coe, observing with a 13" f/5.6, notes: "Faint, pretty large, elongated 1.5 X 1 in PA 135, bright middle at 135X. There is an 11th mag star 5' to the SW."

Steve Gottlieb

03 13.5 -25 44

13: moderately bright, large, fairly diffuse, weak concentration, elongated NW-SE. A mag 12 star is 2.0' SW of center.

Brian Skiff

POSS: pa118. m13 * 2' SW (pa210). no consp *ing NW.

15cm - nope.

25cm - seen N of m12 *. losfcbr. about 2' area has nebulosity, brtst part circ, 1' across. SE partic is curved extension going almost to *. coarsely grainy texture. general elong suspected SE-NW. odd.

30cm - lg and f, losfcbr. 140x: elong E-W w/o concen. 220x: 3'.2x2'.5, sl concen w/a few lumps in middle. threshold *ing to NW 1'. irreg edges. m12.5 * off S side.

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.

Warning: Unknown: open(/tmp/sess_3ba4525e3879bfbaf2c12e898ac16367, O_RDWR) failed: Disk quota exceeded (122) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0