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
                           (Planet-satellite system) Neptunian System
                             0 (Planet) Neptune J.G. Galle, 1846
                             00048 (Moon) Neptune III (Naiad) Voyager Science Team, 1989
                             00050 (Moon) Neptune IV (Thalassa) Voyager Science Team, 1989
                             00053 (Moon) Neptune V (Despina) Voyager Science Team, 1989
                             00062 (Moon) Neptune VI (Galatea) Voyager Science Team, 1989
                             00074 (Moon) Neptune VII (Larissa) Voyager Science Team, 1989
                             00118 (Moon) Neptune VIII (Proteus) Voyager Science Team, 1989
                             00355 (Moon) Neptune I (Triton) W. Lassell, 1846
                             05513 (Moon) Neptune II (Nereid) G.P. Kuiper, 1949
                             15730 (Moon) Neptune IX (Halimede) M. Holman et al., 2002
                             22420 (Moon) Neptune XI (Sao) T. Grav et al., 2002
                             23570 (Moon) Neptune XII (Laomedeia) J. Kavelaars et al., 2002
                             46700 (Moon) Neptune X (Psamathe) S.S. Sheppard et al., 2003
                             48390 (Moon) Neptune XIII (Neso) M. Holman et al., 2002