periodic comet


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Related to periodic comet: Halley's comet, Halley comet

periodic comet

A comet that has been seen to orbit the Sun more than once. The names of such comets are prefixed by P/, as in P/Halley.
References in periodicals archive ?
The new model, a series of mathematical statements describing the motions of periodic comets through the solar system, explains how streams of material from discrete active areas on a comet's crust can create the observed nongravitational shifts.
Rosetta launched in March 2004, and after a long cruise that included flybys of Earth, Mars, and two asteroids--plus an unnervingly long hibernation period--the spacecraft arrived at its primary target, a periodic comet called 67P/Churyumov-Gerasimenko, in August 2014.
It was first viewed in 1948, making it the 45th discovered periodic comet after Haley's comet, the (http://nypost.
The Perseids are pieces of Periodic Comet Swift-Tuttle.
Matese at the University of Southwestern Louisiana in Lafayette created the new theory by merging two ideas that were proposed in the past for reasons totally unrelated to periodic comet impacts and mass extinctions: a tenth planet, dubbed Planet X and envisioned to reside beyond the orbit of Pluto; and a disk or belt of comets throught to lie in the plane of the solar system beyond Neptune.
Periodic comet 41P/Tuttle-Giacobini-Kresak may be reaching 6th or even 5th magnitude very high in the northern evening sky.
These periodic comet showers appear to correlate with the dates of ancient impact craters found on Earth, which would suggest that most impactors in the past were comets, not asteroids.
Unlike most comets, C/1807 R1 proved to be a periodic comet like Halley's, with an elliptical (not parabolic) orbit and a period of more than 1,700 years.
Although not classed as a periodic comet, the object does follow an elliptical orbit with an eccentricity of 0.