Alternatively orbital parameters for the 2nd body can be given, though not implemented yet.

**out=**- output file name. No default.
**m=**- mass of 2nd particle [0.1]
**x=**- X position of 2nd particle [1]
**y=**- Y position of 2nd particle [0]
**z=**- Z position of 2nd particle [0]
**vx=**- VX velocity of 2nd particle [0]
**vy=**- VY velocity of 2nd particle [1]
**vz=**- VY velocity of 2nd particle [0]
**mass=**- Mass of central particle [1.0]
**zerocm=**- if true, zero the center of mass [true]
**headline=**- verbiage for output []

29-Jul-09V1.0 CreatedPJT 7-jun-10V2.0 added mass=PJT