periodic comet

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.

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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.

New orbital model details comet gas effects

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.

Anatomy of a comet: escorted around the sun by Europe's Rosetta spacecraft, Comet 67P/Churyumov-Gerasimenko proved to be more complex than just a "dirty snowball"

It was first viewed in 1948, making it the 45th discovered periodic comet after Haley's comet, the (http://nypost.

Comet 45P Comes Closest To Earth In Decades

The Perseids are pieces of Periodic Comet Swift-Tuttle.

Meteor showers to be visible on 11th August night

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.

Planet X and the killer comets

Periodic comet 41P/Tuttle-Giacobini-Kresak may be reaching 6th or even 5th magnitude very high in the northern evening sky.

Comet 41p is ideally placed

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.

'Dark' comets may pose deadly threat to Earth

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.

Napoleon's comets: the world took notice when two "great comets" appeared four years apart in the 19th century

Although not classed as a periodic comet, the object does follow an elliptical orbit with an eccentricity of 0.

The 2013 October outburst of comet C/2012 X1 (LINEAR)

Both streams originate from the periodic comet 2P/Encke.

Taurid fireball alert: if you see a really bright autumn meteor, note its direction of flight

A tiny periodic comet named 209P/LINEAR will make an unusually close pass by Earth.

Dark with chance of fireballs: Strong new meteor shower to strike: bright meteors could streak from the northern sky on the morning of May 24th