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The Collaborative International Dictionary
Aphelion

Aphelion \A*phel"ion\ (?; 277), n.; pl. Aphelia. [Gr. ? + ? sun.] (Astron.) That point of a planet's or comet's orbit which is most distant from the sun, the opposite point being the perihelion.

Douglas Harper's Etymology Dictionary
aphelion

"point farthest from the sun" (of a celestial body's orbit), 1670s, a Grecianized form of Modern Latin aphelium, altered by Johannes Kepler based on Greek apo heliou "away from the sun," from apo "away from" (see apo-) + heliou, genitive of helios "sun" (see sol). The whole was formed on the model of Ptolemaic apogaeum (see apogee) to reflect the new helio-centric model of the universe.

Wiktionary
aphelion

n. (context astronomy English) The point in the elliptical orbit of a planet, comet, etc., where it is farthest from the sun.

WordNet
aphelion
  1. n. apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun [ant: perihelion]

  2. [also: aphelia (pl)]

Wikipedia
Aphelion (album)

Aphelion is the third studio album by the Austrian symphonic metal band Edenbridge. It was released in 2003.

Aphelion (software)

The Aphelion Imaging Software Suite is a software suite that includes three base products (i.e., Aphelion Lab, Aphelion Dev, and Aphelion ) for addressing image processing and image analysis applications. The suite also includes a set of extension programs to implement specific vertical applications that benefit from imaging techniques.

The Aphelion software products can be used to prototype and deploy applications, or can be integrated, in whole or in part, into a user's system as processing and visualization libraries whoses components are available as both DLLs or .Net components.

Aphelion (disambiguation)

Aphelion is a common noun in astronomy and a proper noun.

Aphelion (Dave Rempis album)

Aphelion is the debut release by the regular working trio of saxophonist Dave Rempis, bassist Joshua Abrams and percussionist Avreeayl Ra, which was recorded live at Chicago's Elastic and Constellation venues during 2013 and released on Rempis' Aerophonic label.

Usage examples of "aphelion".

When the earth leaves the aphelion, a reaction takes place, being most rapid in September.

In applying this reasoning to the earth, we perceive that a certain influence is due to the difference of temperature of the ethereal medium surrounding the earth, at perihelion and aphelion, being least at the former, and greatest at the latter.

At the perihelion the planet is urged from the sun and at the aphelion towards the sun.

If the radial disturbing force be exterior to the disturbed body, it will diminish the central force, and cause a progressive motion in the aphelion point of the orbit.

At the aphelion the comet lingers through half his period, giving ample time for the nucleus to be permeated by ether proportionally dense with the surrounding ether of the vortex at that distance.

The ship, engines extinguished, drifted in a far aphelion, while in the embryonator all the lights went on and the heads of the medicoms hung over the containers, ready to begin.

They numbered almost a million, in high and low orbits, some of which were nearly circular and some elliptical, with aphelions reaching far beyond the Moon.

The ship, engines extinguished, drifted in a far aphelion, while in the embryonator all the lights went on and the heads of the medicoms hung over the containers, ready to begin.

And each of the six worlds is chugging along in its own orbit, naturally, some of them at perihelion at the moment and others at aphelion, and from the point of view of theWotan , confronting the whole system on the skew as it is, they are strewn randomly around the sky.

To light our dreams At rose Aldebaran or sky-huge Antates, Then quench their heat, or temper Damascus thought In cold aphelions and apastrons far!

The issue, basically, was whether the shower of new comets that had been born with Athena provided adequate evidence that the previously existing short-period comets—the ones with aphelia showing a statistical clustering at the distance of Jupiter's orbit—had originated in a similar episode involving Venus.

The issue, basically, was whether the shower of new comets that had been born with Athena provided adequate evidence that the previously existing short-period comets-the ones with aphelia showing a statistical clustering at the distance of Jupiter’s orbit-had originated in a similar episode involving Venus.

Then back into Odessa, to the familiar comforts of their apartment and the town, in the burnished light of the southern autumn which was the longest season of the Martian year, also the approach to aphelion, day after day dimmer and dimmer, until aphelion came, on Ls 70, and between then and the winter solstice at Ls 90 was the Ice Festival, and they ice-skated on the white sea ice right under the corniche, looking up at the town’.

Then back into Odessa, to the familiar comforts of their apartment and the town, in the burnished light of the southern autumn which was the longest season of the Martian year, also the approach to aphelion, day after day dimmer and dimmer, until aphelion came, on Ls 70, and between then and the winter solstice at Ls 90 was the Ice Festival, and they ice-skated on the white sea ice right under the corniche, looking up at the town's seafront all drifted with snow, white under black clouds.