- #include <BodyHeadingMsgPayload.h>
Planet heading message definition.
Many modules in Basilisk utilize the spacecraft body frame heading to something. For instance, a spacecraft may want to point at a point on earth, the sun, another planet or another spacecraft. This message is unique from the interface message NavAttMsgPayload in being agnostic of the thing being pointed to while not including separate information about attitude and rates that are not necessarily desired
 unit heading vector to any thing “X” in the spacecraft, “B”, body frame
- double rHat_XB_B¶