Omicron2Eridani is a triple system, with the primarystar (to which the name Keid formally applies) being an orangedwarf. It is orbited at a distance of some 400 AU by a binary pair of companions, one of which is a low-massred flare star, while the other is a white dwarf (and in fact historically the first white dwarf to be identified).
Keid, a variablestar near the 'source' of the River Eridanus. Its companion Beid, though it appears close in the sky, is actually more than a hundred light years further away than Keid.
* The name 'Vulcan' for this star comes from the lore of the TV series Star Trek, in which it is said to be orbited by the home planet of Mr Spock and his kind. 'Vulcan' is not therefore a traditional name, but it is found in some catalogues, and is therefore included here. There are in fact (as yet unconfirmed) indications of a massiveterrestrial planet in orbit around the primarystar of this triple system, but its orbit would place it rather too close to the orangestar to be realistically habitable.