Satellite systems can have complex interactions including magnetic, tidal, atmospheric and orbital interactions such as orbital resonances and libration.
32.
Jupiter trojans generally follow paths called tadpole orbits around the Lagrangian points; the average period of their libration is about 150 years.
33.
Studies of the Moon's physical librations ( small perturbations to its rotation ) furthermore indicate that the core is still molten.
34.
There has been work conducted to stabilize the librations of the tether system to prevent misalignment of the tether with the gravity gradient.
35.
Lunar laser ranging data for the Moon was added for the first time since DE403, significantly improving the lunar orbit and librations.
36.
An example use case would be : File : Lunar libration with phase Oct 2007 450px . gif which is currently on Moon.
37.
However, due to the effect of libration, about 59 % of the Moon's surface can actually be seen from Earth.
38.
The visibility of this crater is affected by libration of the Moon, so that at times this crater can be hidden from sight.
39.
Due to its location, this crater appears significantly foreshortened when viewed from the Earth, and its visibility can be affected by libration.
40.
Twin end masses are 1.5U CubeSats that will contain GPS and other sensors to accurately measure tether libration and orbital motion data.
