Starlab version 4.4.1
    program created on Apr 27 2005 at 22:55:06
    source file     /home/steve/starlab/src/node/dyn/kepler/kepler.C

kepler:  Starlab kepler structure functions.  Initialize an orbit
         from mass, pos, and vel, or mass, semi-major axis and
         eccentricity, and allow the user to manipulate the
         resulting structure interactively, or animate the orbit.

Command-line arguments:

         -a    specify semi-major axis [1]
         -A    animate to apocenter [no]
         -d    specify animation timestep [1/64 orbit]
         -e    specify eccentricity [0]
         -m    specify total mass or primary mass (animation only) [1]
         -m2   specify mass of second component (animation only) [primary]
         -M    specify mean anomaly [0]
         -O    turn on animation [no]
         -P    animate to pericenter [no]
         -r(R) specify sum of radii (to stop animation) [0]
         -t    specify time [0]
         -T    specify end time of animation [0]
         -x    specify separation vector [(1,0,0)]
         -v    specify relative velocity vector [(0,1,0)]