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COMET ISON PERIHELION, 3772 days ago

Happy Perihelion! was on  Thursday, 28 November 2013

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Apsis - Perihelion Information

  1. Apsis - Wikipedia, the free encyclopedia
    en.wikipedia.org/wiki/Apsis
    An apsis (Greek ἁψίς, gen. ἁψίδος), plural apsides (pron.: /ˈæpsɨdiːz/; Greek: ἁψίδες), is the point of greatest or least distance of a body from one of the foci of its elliptical orbit. In modern celestial mechanics this focus is also the center of attraction, which is usuall
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