I want to know if there is a newer theory than VSOP87 for calculating planet position whitout integration (DE400 wouldn't work) that is as accurate (o better) than this. Thank you in advance.

-- Fernando (fmargueirat@usa.net), February 20, 2001

Answers

I'm no expert on theories at the high precision end, but I think Francou and Chapront did a series for about a century either side of J2000.0 as a smaller series with higher accuracy. A couple of Web references might help...

http://www.projectpluto.com/accuracy.htm#planetary

and

ftp://cdsarc.u-strasbg.fr/pub/cats/VI/87/

might help. Personally, I do the quick and dirty stuff at the arcmin accuracy.

-- Keith Burnett (kburnett@btinternet.com), February 24, 2001.