periodic comets

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• List of periodic comets — Periodic comets are defined for these purposes as those comets having orbital periods of less than 200 years (also known as short period comets ) or which have been observed during more than a single perihelion passage (e.g. 153P/Ikeya Zhang).… …   Wikipedia

• List of non-periodic comets — Non periodic comets (or long period comets) are comets that do not have confirmed observations at more than one perihelion passage,[1] and thus generally have orbital periods of 200 years or more. They include single apparition comets that pass… …   Wikipedia

• Comets in fiction — Comets have, through the centuries, appeared in numerous works of fiction. In earliest times they were seen as portents, either of disaster or of some great historical change. As knowledge of comets increased, comets came to be imagined not just… …   Wikipedia

• List of comets discovered by the LINEAR project — The following is a list of comets discovered, co discovered and re discovered by the Lincoln Laboratory Near Earth Asteroid Research project (LINEAR), an Earth based automated sky survey. In comet nomenclature, the letter before the / is either C …   Wikipedia

• List of comets — 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… …   Wikipedia

• Comet — This article is about the astronomical object. For other uses, see Comet (disambiguation). Comet Hale– …   Wikipedia

• comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… …   Universalium

• Halley's Comet — For the video game, see Halley s Comet (video game). 1P/Halley (Halley s Comet) Halley s Comet on March 8, 1986 Discovery …   Wikipedia

• Astronomical naming conventions — In ancient times, only the Sun and Moon, a few hundred stars and the most easily visible planets had names. Over the last few hundred years, the number of identified astronomical objects has risen from hundreds to over a billion, and more are… …   Wikipedia

• Lost comet — Biela s Comet was seen in two pieces in 1846, and not observed since 1852 ...asteroids were sometimes assigned numbers before accurate orbital elements had been determined, and so some numbered asteroids could not later be located. These objects… …   Wikipedia

• Kuiper belt — Known objects in the Kuiper belt, derived from data from the Minor Planet Center. Obje …   Wikipedia