Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Caelum veter. - region of the fixed stars
         (Constellation) Caelum de Lacaille, 1763 - Cae
           043050.1-445714 (Star) δ Caeli
           044033.7-415150 (Star system) α Caeli
           044203.5-370840 (Star) β Caeli
           044749.6-300113 (Star) ζ Caeli
           050424.4-352900 (Star system) γ¹ Caeli
           050426.1-354219 (Star) γ² Caeli