| 释义 |
apastron
a·pas·tron A5378500 (ə-păs′trən)n. The point at which an object is farthest away from the center of mass of the star it is orbiting.
[ap(o)- + Greek astron, star (probably on the model of aphelion); see ster- in Indo-European roots.]Translationsapastron
apastron (əpăs`trən): see apsisapsis
(pl. apsides), point in the orbit of a body where the body is neither approaching nor receding from another body about which it revolves. Any elliptical orbit has two apsides.
..... Click the link for more information. .apastron (ap-ass -tron) See periastron.apastron[‚a′pas·trən] (astronomy) That point of the orbit of one member of a binary star system at which the stars are farthest apart. MedicalSeeAPSISThesaurusSeeapsis |