Encke's comet

Encke's comet

(enk -kĕz) The most observed comet, having been seen at 55 apparitions. The comet has a period of 3.30 years – one of the shortest – and is thought to be the parent body of the Taurid meteoroid stream. The period of Encke is decreasing by up to 2.7 hours per orbital revolution. This is caused by a jet effect from its rotating nucleus, which is not thermally symmetrical. The brightness of Encke has hardly decreased during the 165 years of observation. Since the orbit of Encke is extremely well known and a considerable bank of scientific data has been established, Encke is one of the prime targets for a spacecraft investigation of a comet.

Encke's Comet

[′eŋ·kəz ′käm·ət]
(astronomy)
A very faint comet with the shortest period of any known comet, 3.3 years.
References in periodicals archive ?
The Unparalleled Adventure of One Hans Pfaall" (1835) tells the story of a voyage to the Moon by balloon; along the way it discusses zodiacal light, the inclination of the Moon's orbital plane, and possible explanations for secular changes in the orbit of Encke's Comet.
In his notes to the tale, Poe scholar Thomas Mabbott also argued that Poe might have been interested in Encke's Comet, because "its periodicity had been calculated," it had returned in 1838, and it "was expected again in 1842.
00 Doncaster Encke's Comet completes an orbit of the Sun once every three years - the shortest period of any known comet.
The comet has been called Encke's comet ever since, the name going to the orbit-establisher rather than to the discoverer.
Encke's comet was the first to be visible throughout its orbit, and this went far to decrease the mystery of comets.
are as much annoyed at the continued existence of Encke's Comet as at its peculiar behavior.
A new mathematical theory for the perturbing effect of Jupiter's attraction showed that Encke's Comet does not keep the same plane for long periods of time.
Dots [in the accompanying graph] represent absolute magnitudes of Encke's comet at each observed return since 1786.