Correction in Ganymede's minor radius from Alessandro Frigeri.

See also
@article{sohl2009interior,
  title={Interior Models of Icy Satellites and Prospects of Investigation},
  author={Sohl, F.},
  journal={Proceedings of the International Astronomical Union},
  volume={5},
  number={S263},
  pages={113--120},
  year={2009},
  publisher={Cambridge Univ Press}
}


git-svn-id: https://svn.osgeo.org/grass/grass/trunk@51594 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/ellipse.table.solar.system

@@ -21,7 +21,7 @@ Io         "Jupiter's satellite Io"       a=1824350.0 b=1815700.0
 # Jupiter's satellite Europa, IAU2000 definition (a is averaged)
 Europa     "Jupiter's satellite Europa"   a=1562680.0 b=1560930.0
 # Jupiter's satellite Ganymede, IAU2000 definition (a is averaged)
-Ganymede   "Jupiter's satellite Ganymede" a=2632345.0 b=2632350.0
+Ganymede   "Jupiter's satellite Ganymede" a=2632345.0 b=2632345.0
 # Jupiter's satellite Callisto, IAU2000 definition (a is averaged)
 Callisto   "Jupiter's satellite Callisto" a=2409300.0 b=2409300.0
 # Jupiter's satellite Amalthea, IAU2000 definition (a is averaged)