Stopping Conditions

Astrogator makes a variety of stopping conditions available for use in defining Propagate, Follow, and Finite Maneuver segments. You can also create new stopping conditions in the Component Browser. Available stopping conditions include:

Condition	Description
Access	Stop upon achieving access between two objects in the scenario. You can only use one star or planet to define the access condition.
Altitude	Stop at a specified altitude measured with reference to the selected central body.
Always Tripped	Stop at each integration step and evaluate the constraints. If the constraints are met, or if there are no constraints set, propagation stops; otherwise, propagation advances to the next step and the constraints are evaluated again.
Apoapsis	Stop at the point farthest from the origin.
Argument of Latitude	Stop on a specified Argument of Latitude.
Ascending Node	Stop when crossing the X-Y plane of the coordinate system in the +Z direction.
Delta V	Stop on a specified V. Use only in defining stopping conditions for finite maneuvers.
Descending Node	Stop when crossing the X-Y plane of the coordinate system in the -Z direction.
Duration	Stop after a specified duration.
Epoch	Stop on a specified date and time.
Lighting	Stop on a lighting condition (e.g., entering or exiting Direct Sun or Umbra).
Longitude	Stop on a specified longitude.
Mean Anomaly	Stop on a specified mean anomaly.
Periapsis	Stop on the point closest to the origin.
R Magnitude	Stop at a specified distance from the origin.
True Anomaly	Stop on a specified true anomaly.
User Select	Stop on a user-specified value using a user-selected calculation object.
X-Y Plane Cross	Stop when crossing the X-Y plane.
Y-Z Plane Cross	Stop when crossing the Y-Z plane.
Z-X Plane Cross	Stop when crossing the Z-X plane.

The User Select stopping condition is especially useful for creating new stopping conditions. If you duplicate the User Select condition and then double click the copy in the Component Browser, a Stopping Conditions window will appear, allowing you to define your new stopping condition in the same manner as you would in a Propagate segment in the Mission Control Sequence. You can also define special variants of existing stopping conditions, e.g. with constraints added on.