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Type: not exist
Mag: B=?, V=?
Size: ?
PA: ?
NGC 2529, 30, and 31. Herschel did indeed discover N2530, and this is the name that, as Steve Gottlieb suggests, should be used for the galaxy. The other two objects were found by Bigourdan very close to N2530. Though he examined the field four times, he saw his two new objects only once. On that one night, he estimated positions with respect to N2530: N2529 is 1' distant at position angle 220 deg, and N2531 is 1' distant at PA = 150 deg. There is nothing in either position on the PSS. He also measured a thirteenth magnitude star the same distance away from N2530 on two nights; it is just where he saw it in PA=15 deg. On the second night, Bigourdan claimed to see stellar objects at the very limit of visibility where he placed N2529 and N2531 earlier, but he did not attempt to measure them. It's clear to me that the two do not exist, probably being those faint illusions that we all see now and then when we get tired or try too hard to push the limits of our optics.
"PGC 22827 = NGC 2530, not = NGC 2529, which does not exist." Corwin, H. G. Jr, Buta, R. J. & De Vaucouleurs, G. (1994) "Corrections and additions of the Third Reference Catalogue of Bright Galaxies", Astron. J., 108(6), 2128.
The RNGC (Sulentic and Tifft 1973) notes that this is a 14.5 mag galaxy. Their coded description reads S,BM,EL,VKNARMS.
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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