Periodic comet

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Related to Periodic comet: Halley's comet, Halley comet
(Astron.) a comet that moves about the sun in an elliptic orbit; a comet that has been seen at two of its approaches to the sun.

See also: Periodic

References in periodicals archive ?
A preceding P means you're looking at a periodic comet (any comet with an orbital period of 200 years or less).
Under this concept, the tiny craft would be parked in a stable, deep-space orbit with the potential to access a known periodic comet or a new comet that ventures into the neighborhood.
The meteors are actually fragments coming off of the Giacobini-Zinner periodic comet that passes Earth every six years and four months.
According to Nasa, this meteor storm would result "from the dust of periodic comet 209P/LINEAR, a Jupiter family comet discovered by the Lincoln Laboratory Near-Earth Asteroid Research project in 2004".
He pointed out that the new shower is the result of dust shed from the faint periodic comet, 209P/LINEAR.
Lyrids are pieces of debris from the periodic Comet C/1861 G1 Thatcher and have been observed for more than 2,600 years.
Periodic comet 2P/ Encke was on its 62nd observed return, showed its usual diffuse coma and narrow ion tail and had a similar faint absolute magnitude to that seen over the last half-century.
The progenitor of this possible display is comet 209P/LINEAR, a periodic comet discovered on Feb.
It was first recorded by Pierre Mechain in 1786 but was not recognised as a periodic comet until 1819 when its orbit was computed by Johann Franz Encke; like Halley's Comet, it is unusual in being named after the calculator of its orbit rather than its discoverer.
This picture shows the periodic comet Holmes, normally millions of times fainter than the weakest visible star, which has flourished and been spotted by astronomers across the region.
The next New Millennium Program mission to use Glenn ion engine technology will be Space Technology 4/Champollion, which will rendezvous (match orbits) with the periodic Comet Tempel 1.
Each time a periodic comet revisits the inner solar system, it can experience the gentle effects of dust-bearing gas jets erupting on its sun-warmed surface.