Re: ngc4223 confusion resolved

I'll try to clarify a bit but it is a confusing situation. There are
two galaxies we're talking about that are 8' apart oriented WNW -
ESE. In most modern galaxy catalogues, the western galaxy (II 137)
is listed as NGC 4241 (the one my notes describe) and the fainter
eastern galaxy as IC 3115. But since William Herschel discovered
both galaxies (John Herschel botched this), his catalogue numbers
should apply to the galaxies based on historical precedence. So, the
western galaxy (II 137) should be catalogued as NGC 4223 and the
eastern galaxy (III 480) as NGC 4241. NED uses the historically
correct numbers as well as amateur software based on the NGC/IC project.

I think I'll reword that confusing sentence as "The galaxy described
above is misidentified as N4241 in modern catalogues. It forms a
pair with IC 3115 (the "real" N4241)."
-- Steve

On May 29, 2009, at 12:54 AM, Matthew Marcus wrote:

> >This galaxy is identified as N4241 in modern catalogues. Forms a
> pair with IC 3115 = N4241
>
> ^---------------------------------------------------------------------
> ---------^
> It forms a pair with itself? Now that's confusion! :-)
> mam
> ----- Original Message -----
> From: Mark Johnston
> To: TAC mailing list
> Sent: Friday, May 29, 2009 12:38 AM
> Subject: [TAC] ngc4223 confusion resolved
>
> Wed night, last night, while at Montebello I observed Ngc4223 but
> then just now writing up my notes I hit some confusion with this
> object and Ngc4241 as well as some IC designations.
>
> Enter the newly back online www.ngcicproject.org and here is
> quite the clarification which I doubt anybody really cares about
> BUT I sure cared just now so thanks Steve and Others helping to get
> that webpage back on the air.
>
> The full clarification follows:
>
> NGC 4223 = UGC 07319 = MCG +01-31-038 = CGCG 041-0653 = IC 3102 =
> LGG 278-004 =
> PGC 39412
> 12 17 25.8 +06 41 24
> V = 11.9; Size 2.6x1.3; SB = 13.2; PA = 128d
>
> 17.5": moderately bright, fairly small, elongated WNW-ESE, bright
> core, larger
> faint extensions with averted. Located 5' N of mag 7.9 SAO
> 119308. This galaxy
> is identified as N4241 in modern catalogues. Forms a pair with IC
> 3115 = N4241
> 8' ESE.
>
> Discovered by WH (II 137) and reobserved by JH (h1165). However JH
> identified
> this galaxy as III 480 (N4241) which caused later confusion. In
> Scientific
> Papers of WH, Dreyer concludes h1165 = N4241 (repeated by Reinmuth
> and Carlson).
> Harold Corwin argues that WH observed both II 137 = N4223 = IC 3102
> and III 480
> = N4241 = IC 3115 and that the brighter, western object is II 137
> (N4223).
> Unfortunately, because of John Herschel's mix-up III 480 was left
> without a
> number. So, modern catalogues identify N4241with U07319 = M
> +01-31-038 = CGCG
> 41-065 = IC 3102 instead of N4223. See NGCBUGS for more on the story.
>
> - by Steve Gottlieb
>
>
>
>
>
>
> ---
>
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> May 20, 2009: TAC Web Page Updated http://observers.org/TAC.cgi/
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---
May 20, 2009: TAC Web Page Updated http://observers.org/TAC.cgi/Announcements/
GSSP is coming - June 20th: http://www.goldenstatestarparty.blogspot.com
TAC mailing list - to join, manage, or leave: http://nine.pairlist.net/mailman/listinfo/tac