apoapsis


Also found in: Dictionary, Thesaurus, Medical.
Related to apoapsis: periapsis

apoapsis

[¦ap·ō¦ap·səs]
(astronomy)
The point in an orbit farthest from the center of attraction.
Mentioned in ?
References in periodicals archive ?
Reducing apoapsis about 1,480 kilometers (1,000 miles) closer to the surface allows the MAVEN orbiter to circle Mars more frequently--6.6 orbits per Earth day versus 5.3 previously--and communicate with the Mars rovers more frequently.
In particular, the semi-major axis of Ganymede (1.595 [R.sub.Eu]) almost matches the apoapsis radius of the nominal 3: 2 orbit (1.621 [R.sub.Eu]).
ISRO scientists have planned to set the spacecraft in an orbit of 377 km periapsis (nearest point from the red planet) and 80,000 km apoapsis (farthest point).
Using this system, we can maximize directly any orbital elements or any other dynamical orbital parameters such as, the radius of periapsis and apoapsis. For example, if the radius of apoapsis, [r.sub.A] = a(1 + e) is differentiated, we obtain