aphelion
noun
the point in the orbit of a planet or a comet at which it is farthest from the sun.
aphelia
-
pluralof aphelion.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It is well known that those of moderately short periods are, for a reason already explained, connected with the larger planets in such a way that the cometary aphelia fall near some planetary orbit.
From A Popular History of Astronomy During the Nineteenth Century Fourth Edition by Agnes M. (Agnes Mary) Clerke
The two last-named comets would likewise seem to have a period of revolution not exceeding five or six years, and their aphelia are in the vicinity of Jupiter's orbit.
From COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 by Alexander von Humboldt
From considerations on the aphelia of certain comets, Prof. Forbes in 1880 computed the probable position of such a body.
From Astronomical Curiosities Facts and Fallacies by J. Ellard Gore
Their orbits have ever since been ellipses with their aphelia in groups corresponding to the distances of the planets concerned.
From Astronomy: The Science of the Heavenly Bodies by David Peck Todd
The extremes of temperature at perihelia and aphelia to which comets are subjected did not bother him particularly.
From Astronomy: The Science of the Heavenly Bodies by David Peck Todd
