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It is inaccurate to say that this star is "reddish". It is slightly "reddened" in that its B-V color index is 0.02 instead of the -0.3 you would expect for an O9 star, but this would only make the star appear white instead of blue-white.
It is also a bit of an exaggeration to say that without the absorbing dust it would be "among the very brightest visible". It would probably be roughly one magnitude brighter which would put it at around magnitude 1.5, that is on the lower limit of the first magnitude. There are about 23 stars brighter than this.
Also, most of the sources I can find list this as a main sequence star (O9V or O9.5V), and not as a giant (O9III).
TristramBrelstaff ( talk) 14:25, 6 April 2010 (UTC)
Is the WISE image in this story in the public domain? It would make a spectacular addition to the article. -- 119.31.126.68 ( talk) 16:08, 25 January 2011 (UTC)
It seems that the constellation map at the beginning of the article circles the wrong star. The circled star is a fainter unlabeled one on the map, whereas the star labeled with the Greek ζ is about two degrees due west of the circle. I do not know how to fix the image, alas. Wwheaton ( talk) 16:28, 5 July 2015 (UTC)
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It has been suggested that this is the closest class O star. No citation was given. Obviously we shouldn't state this without some way for it to be verified. A quick piece of original research shows a number of closer candidates, for example BD+52 913 (white dwarf, sometimes given class O type) and BD+28 4211 (O sub-dwarf). Lithopsian ( talk) 11:27, 18 March 2018 (UTC)