Natura - nature actualia - actual entities Mundus Plinius - physical world Caelum veter. - region of the fixed stars (Constellation) Draco veter. - Dra (Star system) ψ¹ Draconis 174156.3+720856 (Star) ψ¹ Draconis A 174158.0+720925 (Star) ψ¹ Draconis B