Share 'Achiano, Koromo, Rakuno, Sobaico'

Caney Circle's medicine wheel lists these as spirits who bear the name of that direction's respective star. Trying to figure out if Achiano, Koromo, Rakuno, Sobaico are the names of spirits or the names of stars (in the sky), or both. If they are stars, does anyone know exactly which ones in the sky? If they are spirits, where can I read more about them?