Editing Lists of comets

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[[File:S0484.4.jpg|thumb|300px|right|Coin showing [[Caesar's Comet]] as a star with eight rays, tail upward]]
Non-periodic [[comet]]s are seen only once.  They are usually on near-[[parabolic orbit]]s that will not return to the vicinity of the [[Sun]] for thousands of years, if ever.

Periodic comets usually have elongated [[elliptical orbit]]s, 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".  [[Lost comets|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.

== Lists ==
* [[List of comets by type]]
* [[List of comets visited by spacecraft]]
* [[List of comets with no meaningful orbit]]
* [[List of Great Comets]]
* [[List of Halley-type comets]]
* [[List of hyperbolic comets]]
* [[List of long-period comets]]
* [[List of near-parabolic comets]]
* [[List of numbered comets]]
* [[List of periodic comets]]

==See also==
* [[Lists of astronomical objects]]
* [[Comet vintages]]

== External links ==
* [http://www.icq.eps.harvard.edu/bortle.html Bright Comet Chronicles]
* [http://www.minorplanetcenter.org/iau/lists/CometResolution.html 1994 Resolution about comet names]
* [http://www.heavens-above.com/ Comets currently above mag. 12] - [[Heavens-Above]]

{{Comets|nonobject=yes}}
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[[Category:Lists of small Solar System bodies]]