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NGC 5511 (12,188 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 5511

NGC 5511, NGC 5511B, LEDA 50771, MCG+02-36-050

RA: 14h 13m 5.41s
Dec: +08° 37′ 56.1″

Con: Bo÷tes
Ch: MSA:744, U2:197, SA:14

Ref: SIMBAD, Corwin (2004)

(reference key)

Type: galaxy (in cluster)

Mag: B=15, V=?

Size: 0.741′ x 0.741′
PA: ?

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

NGC 5511 is probably CGCG 074-141, but might possibly be CGCG 074-142. The southeastern galaxy is a low surface brightness late-type spiral, while the western object is an S0 of normal surface brightness. The S0, though fainter in total magnitude, is more likely to be seen in a long-focus 18.5-inch refractor (Hough's telescope at Dearborn Observatory, the same Clark refractor used by Safford nearly two decades earlier).

However, Hough's published description reads, "Small, very faint. * 10m, * 10m [sic] preceding." This is a typographical error of some sort. There is no star of 10th magnitude preceding the galaxy (I also checked the possibility that a star might be 10 minutes of time or 10 arcmin preceding, but none are in either place). The only fairly bright star in the area is an 11th magnitude double star following CGCG 074-141 by 14.2 seconds. This casts doubt on the identity with either CGCG galaxy, but Hough's position precesses to within 2 arcmin of the galaxies. Thus, I'm going to give the confused description fairly low weight.

Tempel certainly did not see CGCG 074-142. His description of Hough's nebula reads (in a translation by Wolfgang Steinicke):

"I also searched for the last of Hough's nebulae at 14h 07.5m +9d 10.0' and found at this place a faint star of 12m with very little nebular matter."

I think this is a description of the double star following the galaxies. The fainter star is merged with the image of the brighter, and is southwest. It probably lent just a trace of the appearance of nebulosity to the brighter star as Tempel observed it.

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 15.0 mag galaxy. Their coded description reads SLEL,LBM,HISB.

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