Cosmic Train Schedule

http://clowder.net/hop/railroad/sched.html
Is an attempt to list Hohmann transfer launch windows
between solar-system planets.

The web page has Mercury, Venus, Earth, Mars and Jupiter
but the downloadable Excel spreadsheet has all the planets
out to Neptune. Since the sheet assumes circular, coplanar
orbits, it would approximate Pluto's orbit very badly. And
Excel seemed to balk at having more than 8 If statements in
a cell.

I think the Excel sheet is O.K. but I'm hoping some of the
math wizards that frequent these groups will check it to
see if it's giving good launch windows.

I have also posted this to rec.arts.sf.science and rec.arts.sf.written.
if anyone finds misteaks I will try to correct them promptly.

Regards,
--
Hop David
http://clowder.net/hop/index.html