posigrade

pos·i·grade

 (pŏz′ĭ-grād′)
adj.
1. Of, relating to, or being in the existing direction of motion, as of a spacecraft: fired posigrade rockets to reduce the craft's velocity.
2. Of relating to, or being an orbit that is in the same direction as the direction of rotation of the body being orbited.

posigrade

(ˈpɒzɪˌɡreɪd)
adj
(Astronautics) astronautics of, relating to, or designating motion in the same direction as the current or normal motion
References in periodicals archive ?
For low-Earth orbiting satellites, this angle depends on the location of the encounter (whether northern or southern hemisphere), the inclinations of the satellites (whether posigrade or retrograde) and phase relative to the Earth (whether northbound or southbound).