Usage of program TT.pl, written for Linux and other U**X users:

---> The program is under the GNU Public License (GPL);
use or modify it as you like, but if you pass it on to anyone, you must do so 
also under the GPL.

This docu is very sketchy for now. I will improve it over time ;)

call: ./TT.pl <parameter file>
with the sample parameter file tt.par, this is:
./TT.pl tt.par

The parameter file contains orbital data, times for departure and arrival,
task lists for the program, etc. It is in clear-text format, and is
self-explanatory to some extent.
Output goes to the files specified in the parameter file, look for lines
like 
orbit Earth, traj file:     "file name"
A -- (or anything else) at the beginning of a line comments the line
out, i.e., TT.pl will not recognize it.

I use gnuplot for plotting the output
Here are some sample gnuplot command lines:

To view orbits:
spl [] [] "Earth_orb" us 2:3:4  wi li, "Earth_pos_s" us 2:3:4 wi li,\\
"Apophis_orb" us 2:3:4 wi li, "Apophis_pos_e" us 2:3:4 wi li, \\
"E_A_traj0" us 2:3:4 wi li, "E_A_pos0_s" us 2:3:4 wi li, \\
"E_A_pos0_e" us 2:3:4 wi li


To get a Delta-v plot over departure and arrival times:
spl [] [] [0:110] "E_A_Dv0" us 1:2:3  wi li

compare the orbit diagrams with
http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=99942;orb=1



questions, comments, ...: bernhard [a-in-circle] bernhard-adams [dot] com