books.google.es - The quantity of numbered minor planets has now well exceeded a quarter million. The new sixth edition of the Dictionary of Minor Planet Names, which is the IAU s official reference work for the field, now covers more than 17,000 named minor planets. In addition to being of practical value for identification...http://books.google.es/books/about/Dictionary_of_Minor_Planet_Names.html?hl=es&id=aeAg1X7afOoC&utm_source=gb-gplus-shareDictionary of Minor Planet Names