keith on 05-Mar-2012 15:23:05 GMT about * eps Gem
The various Hipparcos input and output catalogues have an incorrect spectral type for this star.
The HIP lists the SpT as A3mA6-A9, with the unhelpful reference 'updated after publication of the HIC', and there's a known error in the photometry.
The HIC itself gives the SpT as A3m, referencing volume 4 of the Michigan catalogue. Except the Michigan catalogue hasn't got that far north yet, and volume four was for stars between -26 < dec < -12, whilst eps Gem is at +25.
The CCDM, which formed part of the Hipparcos input, lists the primary as a G5 (and the secondary as K).
The correct spectral type for this star, based on multiple determinations BEFORE the publication of the Hipparcos catalogues, is G8 Ib.
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View annotation on * eps Gem object