Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Astra Plinius - celestial bodies
         Universe
           (Supercluster) Virgo-Hydra-Centaurus Supercluster
             (Supercluster) Virgo Supercluster
               (Cluster) Local Group
                 (Galaxy) Milky Way Galaxy veter.
                   (Spiral arm) Orion Arm
                     (Region) Local Bubble
                       Local Interstellar Cloud
                         (Planetary system) Solar System
                           (Region) Scattered disc
                             067.9016278.0 (Dwarf planet) (136199) Eris (2003 UB313)
                             067.9016278.1 (Moon) (136199) Eris I Dysnomia M.E. Brown et al., 2005
                             539.6679947 (Minor planet) (90377) Sedna (2003 VB12)