It's also quite verbose, but that's not a problem yet. The units used for the solar system data may not be obvious. All angle fields in the catalog are in degrees. All solar system textures should be placed in the textures subdirectory. Currently, JPEG and BMP are the only formats supported.
Models belong in the models directory.
The first four bytes are an int containing the number of stars in the database. The Mars, Moon, and Pluto textures and bump maps are all from James Hastings-Trew's collection. 3D asteroid models of Toutatis, Kleopatra, and Geographos are courtesy of Scott Hudson, Washington State University.