BETA CANIS MINORIS

'Beta Canis Minoris' (β CMi / β Canis Minoris) is a star in the constellation of Canis Minor. It also has the traditional name 'Gomeisa'.
Beta Canis Minoris is a hot, B8-class main sequence star of apparent magnitude 2.9, easily visible to the naked eye. It is slightly variable, and belongs to the Gamma Cassiopeiae category of variable stars. This star is rotating rapidly and is surrounded by a disk of material, which the emissions are heating up.
The traditional name is supposed to be from an Arabic word ''al-ghumaisa’'' "the bleary-eyed one", cognate with the modern Arabic name for Procyon, 'غموص' ''ghumūş''.

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★ ★ class=wikiexternal target=_blank>+BET+CMI&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2006&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0 SIMBAD Query Result

★ Alcyone emphemeris entry

★ Gomeisa by Professor Jim Kaler.