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 660 (1,240 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 660

NGC 660, LEDA 6318, MCG+02-05-013, UGC 1201, II 253, GC 390

RA: 01h 43m 1.73s
Dec: +13° 38′ 36.2″

Con: Pisces
Ch: MSA:217, U2:173, SA:10


(reference key)

Type: galaxy (AGN LINER-type), SBa:

Mag: B=12.8, V=?

Size: 7.585′ x 2.818′
PA: 170°

Historical observations

William Herschel (c.1784)

Synonyms: H II-253

Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, Pl, E, bM, r."

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy. Their coded description reads SB,LGDKPCH FO ENDBAR BAR W/DKLNS,BDDIFARMS,MBRIGHTERBAR.

Modern observations

Steve Coe

Steve Coe, using a 13.1" f/5.6, notes: ""NGC 660 Pretty bright, pretty large, elongated 3 X 1 in PA 0, bright middle. At 135X this galaxy grows in length with averted vision."

Gramer, Lew (IAAC)

Observer: Lew Gramer; Your skills: Intermediate; Date and UT of Observation: 1997-11-29/30, 03:40 UT; Location: Miles Standish State Forest, Carver, MA, USA (41N); Site classification: rural; Limiting magnitude: 6.6 (zenith), 6.2 (in S); Seeing: 2 of 10 - excellent; Moon up: no; Instrument: 8" f/10 Schmidt-Cassegrain, fork equatorial, 8x50mm finder; Magnification: 80x, 170x, 340x; Filters used: None; Object: NGC660; Category: Spiral Galaxy [SB(s)aP]; Constellation: Psc; Data: mag 11.2 size 8.3'x3.2'; RA/DE: 01h43m +13o39m

Description: This relatively bright NGC spiral was picked up tonight as follows: I began by following the pointer of alpha and beta Ari to eta Psc, the bright star nearest M74 (see previous observation this evening). Forming the S vertex of an equilateral triangle with eta and M74 is blue-white finder star 101 Psc. Eta and 101 in turn point S a finder field or so to a contrasty (blue and orange) pair of mag. 7 stars. Less than 1o beyond this pair is another fainter pair of mag. 8 stars with PA 90o (oriented E-W). Switching to a wide-angle (80x) eyepiece in the main scope, an averted-vision haze became apparent immediately E of the Emost of these two stars. At higher powers (first 170x, then with difficulty 340x), this haze was easily confirmed even becoming occasionally visible to direct vision. However, even yet it required averted vision to see elongation, and no further detail could be seen at any power (in what is normally a fine sight for larger apertures). Still, I was sufficiently encouraged by my success with n660 tonight, to sweep up a whole group of other serious Challenge Galaxies in such a small aperture... (See later observing logs.)

Contemporary observations

Tom Bryant

2011 1 4 19:43:13

Observing site: Little Bennett Regional Park

Telescope: C-11

[1h 43m 0s, 13 38m 0s] A large (10') galaxy with very low surface brighness. No distinct nucleus. Sd? Internet: A "Polar ring" galaxy, the apparent merger of two galaxies. Sd is not far off the mark.

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.