Apsis

Apsis (n.)
definition: In a curve referred to polar coordinates
Any point for which the radius vector is a maximum or minimum.
Apsis is a 5 letter word that begins with an A and ends in an S

Apsis (n.)
definition: One of the two points of an orbit
As of a planet or satellite which are at the greatest and least distance from the central body corresponding to the aphelion and perihelion of a planet or to the apogee and perigee of the moon. The more distant is called the higher apsis; the other the lower apsis; and the line joining them the line of apsides.
Apsis is a 5 letter word that begins with an A and ends in an S

Apsis (n.)
definition: Same as Apse.

Apsis is a 5 letter word that begins with an A and ends in an S

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