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  2. C/2014 UN271 (Bernardinelli–Bernstein) - Wikipedia

    en.wikipedia.org/wiki/C/2014_UN271_(Bernardinelli...

    Even at its minimum estimated diameter, C/2014 UN 271 is the largest Oort cloud comet discovered, being more than 50 times larger than a typical comet which is less than 2 km (1.2 mi) in diameter. The previous largest known long-period comet was C/2002 VQ 94 (LINEAR) with a diameter of 96 km (60 mi), [35] followed by Comet Hale–Bopp at 74 km ...

  3. Observational history of comets - Wikipedia

    en.wikipedia.org/.../Observational_history_of_comets

    The second comet found to have a periodic orbit was Encke's Comet (with the official designation of 2P/Encke). During the period 1819–1821 the German mathematician and physicist Johann Franz Encke computed the orbits for a series of comets that had been observed in 1786, 1795, 1805, and 1818, and he concluded that they were the same comet ...

  4. List of long-period comets - Wikipedia

    en.wikipedia.org/wiki/List_of_long-period_comets

    The following list is of comets with very long orbital periods, defined as between 200 and 1000 years.These comets come from the Kuiper belt and scattered disk, beyond the orbit of Pluto, with possible origins in the Oort cloud for many.

  5. NASA spots ‘record-breaking’ comet hurtling toward ... - AOL

    www.aol.com/nasa-spots-record-breaking-comet...

    The space agency said it’s the biggest comet nucleus ever recorded with an estimated diameter of 80 miles and overall bigger than the state of Rhode Island.

  6. The mega-comet hurtling through our solar system is 85, yes ...

    www.aol.com/mega-comet-hurtling-solar-system...

    Named Comet Bernardinelli-Bernstein, it was perhaps the largest comet ever detected, likely some 10 times larger than the 6-mile-wide object that pummeled Earth and triggered the dinosaurs ...

  7. Lists of comets - Wikipedia

    en.wikipedia.org/wiki/Lists_of_comets

    Coin showing Caesar's Comet as a star with eight rays, tail upward. Non-periodic comets are seen only once. They are usually on near-parabolic orbits that will not return to the vicinity of the Sun for thousands of years, if ever.

  8. 4 billion-year-old comet, largest ever seen, set to pass ...

    www.aol.com/news/largest-comet-ever-seen...

    A huge comet with a solid center more than twice the width of Rhode Island is on an orbital path that will swing it inside our cosmic neighborhood, astronomers 4 billion-year-old comet, largest ...

  9. List of periodic comets - Wikipedia

    en.wikipedia.org/wiki/List_of_periodic_comets

    In comet nomenclature, the letter before the "/" is either "C" (a non-periodic comet), "P" (a periodic comet), "D" (a comet that has been lost or has disintegrated), "X" (a comet for which no reliable orbit could be calculated —usually historical comets), "I" for an interstellar object, or "A" for an object that was either mistakenly ...