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  • noun

Antonyms for perihelion

periapsis in solar orbit

References in periodicals archive ?
1 Monthly Notices of the Royal Astronomical Society Letters, that not one but two planets are needed to explain the perihelion clustering.
Neither Jupiter, Saturn, Uranus nor Neptune reach perihelion or aphelion during the year.
Hours before ISON reached perihelion, stunning images taken by SOHO's Large Angle and Spectrometric Coronagraph (LASCO) showed the bright, elongated tail of the onrushing comet.
Kos Coronaios was also able to secure a final image of the comet in the early morning sky after perihelion, on 2013 Apr 16.
The slow rate of brightening meant that planned observation from Mars by the NASA rovers was not possible, however Earth-based images captured some superb views of the comet on its run into perihelion.
A Perigee B Aphelion C Zenith D Perihelion All puzzles in this supplement are supplied by Sirius Media Services.
Every January, the earth is at perihelion, the closest to the sun for the year, and in July it is at aphelion, the farthest from the sun for the year.
When we're closest to the Sun - a perihelion - it's only 147 million km
com, the comet's perihelion (its closest point to the sun) is due on November 28, 2013.
1 million kilometres when earth comes to the perihelion -- the closest point from the sun, said Syed Nadeem Hassan, a UAE astronomer.
Kepler had arrived at this point by assuming that the speed of a planet in its orbit was inversely proportional to its distance from the sun, a statement that indeed works at the perihelion and aphelion.
And it's going to be approaching its perihelion, which is its closest point to the sun, in mid-June.
As well as ante-post favourite Moonstone, O'Brien has declared Adored, Gentle On My Mind, Honoria, Perihelion and Ice Queen as he bids to add to the recent wins of Alexandrova (2006) and Peeping Fawn (2007) in the 12-furlong Classic.
Earlier, Perihelion rounded off another excellent day for Aidan O'Brien by winning the opening maiden under Seamus Heffernan.
The point where a planetCOs orbit is nearest to the Sun is called the perihelion.