The apoapse , apoapside , higher apsis or apocentre is the point of the Orbite of an celestial object where the distance is maximum compared to the hearth of the orbit.
Its Antonyme is Périapse, Périapside or Péricentre.
The distance from the center of mass to the apoapse can be calculated in the following way:
In the case of a star or principal objects of the Solar system, one uses a related specialized term (only aphelion , apogee and apastre is usually used): These terms are formed by taking the Greek root of the corresponding body. Note that Aphélie , Aphèrme and Aphade decides Ap- , pH being an artefact of the C-W communication. The terms Apolune and Apojove are to be avoided. One in the case of sees sometimes also Apocynthe an artificial satellite of the Moon.
Right French: decree of February 20th, 1995 relating to the terminology of sciences and space technology.
List of the articles relating to astronautics
- lunar Calculations
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