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Lists of comets

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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.

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 orbit has not been determined are designated with a "X" prefix.

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Comets
Features Comet C/1996 B2 (Hyakutake)
Types
Related
Exploration
Latest
Culture and
speculation
Lists of comets (more)
Periodic
comets
Until 1985
(all)
After 1985
(notable)
Comet-like
asteroids
Lost
Recovered
Destroyed
Not found
Visited by
spacecraft
Near-Parabolic
comets
(notable)
Until 1990
After 1990
After 1910
(by name)
Modern impact events
On Earth
Pre-2000
Post-2000
On MarsImpact events on Mars
On Jupiter
Lists
See also
Portals: Disambiguation iconThis article includes an astronomy-related list of lists. Categories: