bergeat on 08-Sep-2012 15:29:42 GMT about BD+09 3580
It's a pity no reference be quoted for that star. In my contention it was observed in multicolor photometry by Mendoza & Johnson (1965, ApJ 141, 161) instead of HD 166097 = BD+09 3576, a carbon star (CGCS 3957) nearly 10 arcmin off. See my annotation for the carbon star.
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View annotation on BD+09 3580 object