Options for the Ground Track constraint, an Advanced vehicle constraint.

Member	Value	Description
eDirectionAscending	0	Ascending: constrain access to the ascending side of the satellite's ground track, defined as the portions of the ground track where the Earth-fixed latitude increases.
eDirectionDescending	1	Descending: constrain access to the descending side of the satellite's ground track, defined as the portions of the ground track where the Earth-fixed latitude decreases.