The calculations for this research were performed on a PC with the GNU/Linux operating system. We thank the many programmers who have contributed freely to its development and, in particular, Richard Stallman and Linus Torvalds who respectively lead the GNU software project and the Linux kernel development. We thank Pierre Bretagnon for providing the FB3 series and helpful discussion. We thank Myles Standish for providing subroutine CHEBFIT, the JPL ephemerides, DE200 and DE405, and (as referee) many useful presentation suggestions. This work was partially supported out of an operating grant to Don A. VandenBerg from the Natural Sciences and Engineering Research Council of Canada.
© European Southern Observatory (ESO) 1999
Online publication: July 26, 1999