The small cross indicates the position of the Earth when at perihelion in early January. |
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The radius vector is shortest when the planet is at perihelion and longest at aphelion. |
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At perihelion, when proper motion reaches its maximum, it exceeds the diurnal motion, and the Sun turns slowly retrograde for a week. |
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There is a small periodic effect called nutation superimposed on precession caused by the motion of the perihelion of the Moon. |
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He calculated to within a month the return in 1759 of Halley's comet to its perihelion. |
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Maximum gravitation force occurs when a syzygy and perigee occur on the same day as perihelion. |
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Saturn in Cancer at the time of the perihelion inclines you to deal with issues of home, family, security, finances, and relationships. |
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With aching finality, the moon unseen reached its perihelion in the sky and the hour sounded the twelve chimes of middle night. |
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I'm not trying to calculate the perihelion of Jupiter or do 3D renderings of the National Cathedral. |
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The Sun keeps a tight rein on Mercury this month because the planet's greatest elongation falls on the day before its perihelion, when it is physically closest to the Sun. |
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In this way in approximately 9.800 years, the Earth will pass in perihelion on June 21th at the time of the summer solstice. |
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The sum of the angles subtended at S by the arcs VN and NA is called the longitude of the perihelion. |
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The date of passage of the Earth in perihelion and that of passage in aphelion advance in our calendar. |
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But it's not that simple either, because the dates of the perihelion and aphelion are also shifting. |
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It goes without saying that the orbit of the moon would vary in accordance, expanding towards perihelion and contracting towards aphelion. |
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Pluto, which has the greatest orbital eccentricity of any of the Solar System planets, was during those years at perihelion and actually closer than Neptune to the Sun. |
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This position is called perihelion and occurs every year around the beginning of January. |
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We proved the validity of both the progress of the perihelion of Mercury and of the bending of light close the sun with the Maxwell Analogy. |
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It is perhaps not occasional that Mercury's perihelion advance is for Einstein the reference to justify the General Relativity Theory. |
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We see therefore that the wrong Lorentz gauge nevertheless finds a correct solution for Mercury's perihelion and for the bending by the sun. |
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Three elements to which the theory had to satisfy were known: the Newton limit, the bending of light and the progress of Mercury's perihelion. |
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The problem involved the advance of the perihelion of the planet Mercury. |
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This affects the climate because the influx of solar energy to our planet would then vary between perihelion and aphelion by a larger proportion than at present. |
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It orbits the sun on a highly elliptical path which, even at its perihelion, puts the planetoid more than twice the average distance from the Sun to Pluto. |
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The perihelion currently occurs in January and the aphelion in July. |
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There are times when it is more elliptical than it is now, so the difference in solar radiation received at the perihelion and aphelion will be greater. |
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These three groups have more distant perihelia than the Kreutz group and many objects survive perihelion. |
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However small the eccentricity of earth's orbit, it is sufficient to bring the earth 5 million kilo metres closer to the Sun at perihelion than at aphelion, which is about 13 times the distance between the moon and the earth! |
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Then, as 67P arrives at perihelion, more and more icy material will evaporate and escape from it as jets, and Philae should be well-placed to sniff out exactly what lies within. |
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The most energy efficient method of getting there is to launch oneself into an orbit whose aphelion reaches the orbit of Mars and whose perihelion is the orbit of the Earth. |
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The eta Aquariids are the outbound remnants of comet Halley after perihelion in their orbit. |
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In modern times, Earth's perihelion occurs around 3 January, and its aphelion around 4 July. |
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Hours before ISON reached perihelion, stunning images taken by SOHO's Large Angle and Spectrometric Coronagraph showed the bright, elongated tail of the onrushing comet. |
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Secular increase of the astronomical unit and perihelion precessions as tests of the Dvali Gabadadze Porrati multidimensional braneworld scenario. |
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