The strange periodic comet Machholz

Details The strange periodic comet Machholz The strange periodic comet Machholz

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990sci...247.1063g&link_type=abstract

Science (ISSN 0036-8075), vol. 247, March 2, 1990, p. 1063-1067.

Astronomy and Astrophysics

Astronomy

14

Astronomical Photography, Comet Nuclei, Charge Coupled Devices, Northern Hemisphere, Perihelions, Comets, Machholz, 1986Viii, Short-Period Comets, Period, Evolution, Orbits, Astronomy, Perihelion, Discovery, Distance, Orbital Parameters, Inclination, Imagery, Comet Nuclei, Comparisons, Perturbations, Comae, Analysis, Meteor Showers, Phaethon, Asteroids, Earth-Based Observations, Physical Properties, Characteristics, Comet Tails, Morphology, Brightness, Celestial Mechanics

Scientific paper

The recently discovered periodic comet Machholz 1986 VIII travels closer to the sun than any known planet and any known comet, with an orbital period of less than 150 years, thus providing astronomers with a unique object for studying cometary evolution. The comet is spiraling steadily closer to the sun, from perihelion distance q of 0.9 AU at about A.D. 700 to 0.13 AU at present (orbital period, 5.25 years), to an expected 0.03 by about 2450; should the comet survive such increasingly close perihelion passages, q will begin steadily to increase shortly thereafter.

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