FFEphemProperties.AddColumn(String, Variable, String) Method
Adds a new column to the ephemeris with the specified column label that will be interpolated using the specified interpolator and with 'spacecraftProperty' as the associated mapped Spacecraft object property.
If mapping a 'spacecraftProperty' representing an orbital element, use caution in mapping orbital elements from different element sets into one Ephemeris object; doing so may cause unexpected behavior when propagating the Spacecraft. For example, if the Keplerian true anomaly is mapped to the ephemeris along with the Cartesian position and velocity, the Keplerian true anomaly will be written into the Spacecraft after the position and velocity elements. In this particular case, writing the Keplerian true anomaly may adjust the Spacecraft's position and velocity, resulting in a slightly different state than the original position and velocity.
Timing Precision Mode
This page describes functionality in millisecond timing precision mode.
Returns the number of columns in the ephemeris after the new column is added.