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.
[posi(tive) + (retro)grade.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

posigrade

(ˈpɒzɪˌɡreɪd)
adj
(Astronautics) astronautics of, relating to, or designating motion in the same direction as the current or normal motion
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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).
Abstracts the 90th Annual Academy of Science meeting Samford University Birmingham, AL March 20-22, 2013
The facility now has three pads used to launch satellites into low altitude, posigrade orbit with inclinations greater than 40 degrees.
China's military space program: strategic threat, regional power, or national defense?
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