Guide can use the most updated data file for moon and planets DE406?
(for hystorical times is the best, but... the dimension is 200 Mb)

References:
JPL DE406 data file
http://www.willbell.com/software/jpl.htm

JPL DE405 info
http://ssd.jpl.nasa.gov/iau-co/relateds.html

JPL program Horizons
http://ssd.jpl.nasa.gov/cgi-bin/eph



Regards Dario