that time of a planets or comets orbit that will be most distant from the sunlight the contrary point being the perihelion
- apoapsis in solar power orbit; the point when you look at the orbit of a planet or comet this is certainly in the greatest length from the sunshine
- That point of a planet's or comet's orbit that is most distant from the sunlight, the alternative point being the perihelion.
"point farthest through the sunshine" (of a celestial body's orbit), 1670s, a Grecianized kind of Modern Latin aphelium, modified by Johannes Kepler considering Greek apo heliou "away from sunshine," from apo "away from" (see apo-) + heliou, genitive of helios "sun" (see sol). The complete ended up being formed regarding the type of Ptolemaic apogaeum (identify apogee) to reflect the brand new helio-centric model of the world.
(n.) That point of a planet's or comet's orbit which can be many distant from the sunlight, the contrary point becoming the perihelion.