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aphelion

NOUN
  1. apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun

How To Use aphelion In A Sentence

  • In 12,900 years, the North will have colder winters because Earth will be furthest from the Sun (aphelion) in January. Milankovitch cycles
  • It is at the equinoxes that the earth changes her distances from the sun most rapidly, and whether she is passing from her perihelion or from her aphelion, the density of the ether externally is changing in the subduplicate ratio of these distances and consequently at these times there will be the greatest disturbance of the electric equilibrium. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence
  • Variations in the timing of perihelion and aphelion are caused by a ‘wobbling’ in the Earth's axis of rotation as it rotates around the Sun.
  • The radius vector is shortest when the planet is at perihelion and longest at aphelion.
  • The difference between the perihelion and aphelion distances is about 3%, and therefore extraterrestrial irradiance is about 7% higher during the austral (Southern Hemisphere) summer than it is during the boreal (Northern Hemisphere) summer. Factors affecting surface ultraviolet radiation levels in the Arctic
  • Furthermore, any resonance with the Earth is illusory in that Mercury is not well placed for observations except during its brief greatest elongations near its aphelion.
  • At the perihelion this excess of tangential velocity creates a resistance, which urges the planet towards the sun, and at the aphelion, the deficiency of tangential velocity urges the planet from the sun, -- the maximum effect being at the apsides of the orbit, and null at the mean distances. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence
  • Furthermore, any resonance with the Earth is illusory in that Mercury is not well placed for observations except during its brief greatest elongations near its aphelion.
  • Criminy, I almost forgot: on July 4th, at roughly 08: 00 UT, the Earth was at aphelion. Does the Sun Look Smaller to You? | Disinformation
  • Comets, with their hugely eccentric orbits, may pass far beyond the outer planets to spend their aphelion in the vast interstellar darkness beyond the Kuiper Belt . Planet-x.com.au » artnouveauho: Aphelion
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