Kistler K-1
It was designed to accommodate a wide range of missions , including payload delivery to low Earth orbit ( LEO ) , payload delivery to high-energy orbits with a K-1 Active Dispenser , technology demonstration flights , microgravity missions , and commercial cargo resupply , recovery , and reboost services for the International Space Station . 
<triplet> International Space Station <subj> low Earth orbit <obj> type of orbit