| 31. | The research center developed XLim which was used at the origin of Aphelion developments in 1999.
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| 32. | When Neptune's eccentricity is large its aphelion can reach well beyond it current orbit.
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| 33. | The aphelion distance between the Earth's and Sun's centers is currently about or.
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| 34. | At aphelion in July the opposite holds, with TCG ticking faster than it does on average.
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| 35. | Currently, perihelion occurs during the southern hemisphere's summer and aphelion during the southern winter.
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| 36. | In other words, the asteroid's perihelion is between Earth's perihelion and aphelion.
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| 37. | It started with the establishment of the Quest and Aphelion consortiums, followed by ProEd and Radix.
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| 38. | This will be true even when the Moon is at perigee, and the Earth at aphelion.
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| 39. | The comparatively large aphelion when it is winter in the southern hemisphere and summer in the north.
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| 40. | :: In terms of insolation, the difference between aphelion and perihelion is about 6 %.
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