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2. Historical comet observations in China - Wikipedia

   en.wikipedia.org/wiki/Historical_comet...

   The Chinese records are not only the most extensive from ancient times, they are also the most accurate, often to within half a degree of right ascension. Western measurements did not overtake them for accuracy until the fifteenth century: in 1456 AD Paolo Toscanelli tracked the progress of Halley's Comet to within a fraction of a degree. [3]

3. Observational history of comets - Wikipedia

   en.wikipedia.org/.../Observational_history_of_comets

   The arrows could hit animals or people and were feared when walking at night. Comets were conceived as smoking stars and as bad omens, e.g., announcing the death of a ruler. [9] Ancient Chinese records of comet apparitions have been particularly useful to modern astronomers. They are accurate, extensive, and consistent over three millennia.

4. Lists of comets - Wikipedia

   en.wikipedia.org/wiki/Lists_of_comets

   Periodic comets usually have elongated elliptical orbits, and usually return to the vicinity of the Sun after a number of decades. The official names of non-periodic comets begin with a "C"; the names of periodic comets begin with "P" or a number followed by "P". Comets that have been lost or disappeared have names with a "D". Comets whose ...

5. List of periodic comets - Wikipedia

   en.wikipedia.org/wiki/List_of_periodic_comets

   Periodic comets sometimes bear the same name repeatedly (e.g. the nine Shoemaker–Levy comets or the twenty-four NEAT comets); the IAU system distinguishes between them either through the number prefix or by the full designation (e. g. 181P and 192P/Shoemaker–Levy are both "Comet Shoemaker–Levy"). In the literature, an informal numbering ...

6. List of long-period comets - Wikipedia

   en.wikipedia.org/wiki/List_of_long-period_comets

   These comets come from the Kuiper belt and scattered disk, beyond the orbit of Pluto, with possible origins in the Oort cloud for many. For comets with an orbital period of over 1000 years (semi-major axis greater than ~100 AU), see the List of near-parabolic comets .

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8. List of comets by type - Wikipedia

   en.wikipedia.org/wiki/List_of_comets_by_type

   This is a list of comets (bodies that travel in elliptical, parabolic, and sometimes hyperbolic orbits and display a tail behind them) listed by type. Comets are sorted into four categories: periodic comets (e.g. Halley's Comet), non-periodic comets (e.g. Comet Hale–Bopp), comets with no meaningful orbit (the Great Comet of 1106), and lost comets (), displayed as either P (periodic), C (non ...

9. Download, install, or uninstall AOL Desktop Gold - AOL Help

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   Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.