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DOCdb

Deep Sky Observer's Companion – the online database

 

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IC 4612 (13,807 of 18,816)

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IC 4612

IC 4612, MCG+07-34-113, ZW I 157

RA: 16h 33m 49.6s
Dec: +39° 15′ 47.5″

Con: Hercules
Ch: MSA:1137, U2:80, SA:8

Ref: SIMBAD

(reference key)

Type: galaxy (in cluster), E

Mag: B=14.6, V=?

Size: 0.977′ x 0.977′
PA: ?

History and Accurate Positions for the NGC/IC Objects (Corwin 2004)

IC 4612. A curious case; this is the brightest of three galaxies in a group found on 25 July 1903. The IC position is correct, as is Javelle's reduced position. However, his RA offset carries the wrong sign. This error had no effect on the subsequent history of the object.

This has, however, not kept MCG from giving the wrong IC number to the object. IC 4610 is about 2 arcmin preceding, and it is this number that has ended up on the brighter object. This was unfortunately copied into RC3, once again showing the roots of that catalogue in MCG, via PGC. CGCG got the right number on the right galaxy.

Another curiosity of the field: IC 4611 has the wrong NPD sign in Javelle's table of offsets -- and the wrong reduced position, too.

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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.