Comets with very long orbits, lasting more than two hundred years, which often arrive from the distant Oort cloud and may be seen only once in human history. A comet belongs here when its cited article calls it a long-period comet or places its origin in the Oort cloud. Members are placed here from their own cited Wikipedia articles, each with a verbatim supporting quotation, so a reader can check why an entry sits in this group. The grouping forms part of the browse path for this section of the atlas.
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Long-Period Comets
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Comet Hale-Bopp (Wikipedia)
Has Member: Comet Hale-Bopp, Lead sentenceQuote, Has Member: Comet Hale-Bopp, Lead sentence
Comet Hale-Bopp (formally designated C/1995 O1) is a long-period comet that was one of the most widely observed of the 20th century and one of the brightest seen for many decades.
Comet NEOWISE (Wikipedia)
Has Member: Comet NEOWISE, Lead sentenceQuote, Has Member: Comet NEOWISE, Lead sentence
C/2020 F3 (NEOWISE) or Comet NEOWISE is a long period comet with a near-parabolic orbit discovered on March 27, 2020, by astronomers during the NEOWISE mission of the Wide-field Infrared Survey Explorer (WISE) space telescope.
Comet ISON (Wikipedia)
Has Member: Comet ISON, Lead sentenceQuote, Has Member: Comet ISON, Lead sentence
Comet ISON, formally known as C/2012 S1, was a sungrazing comet from the Oort cloud which was discovered on 21 September 2012 by Vitaly Nevsky (Віталь Неўскі, Vitebsk, Belarus) and Artyom Novichonok (Артём Новичонок, Kondopoga, Russia).
Comet Hyakutake (Wikipedia)
Has Member: Comet Hyakutake, Lead: kind of objectQuote, Has Member: Comet Hyakutake, Lead: kind of object
Hyakutake is a long-period comet
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