Tundra orbit
A Tundra orbit ( Russian: Орбита «Тундра» ) is a highly elliptical geosynchronous orbit with a high inclination ( approximately 63 . 4° ) , an orbital period of one sidereal day , and a typical eccentricity between 0 . 2 and 0 . 3 . 
<triplet> Tundra orbit <subj> highly elliptical <obj> subclass of