The reappearance of Halley's Comet in 1910

Details The reappearance of Halley's Comet in 1910 The reappearance of Halley's Comet in 1910

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984lastr..98..535b&link_type=abstract

L'Astronomie (ISSN 0004-6302), vol. 98, Dec. 1984, p. 535-548. In French.

Mathematics

Logic

Astrometry, Halley'S Comet, Solar Orbits, Space Observations (From Earth), Histories, Perihelions, Visibility

Scientific paper

The reappearance of Halley's Comet in 1910 and its position in the sky were predicted through the work of many astronomers. Results of astrometric observations carried out in 1910 indicated that Halley's Comet exhibited an osculating orbit, and taking into account its position in relation to the sun and its distance from the earth, the best period for the morphological observations was found to be between the last week in April and the first week in June 1910. As photographic technique and spectral analysis developed, the knowledge of the physical properties of Halley's Comet, which are dependent on the heliocentric distance, improved. Information obtained several months before the perihelion, revealed the existence of a bulbous cometary head with a nuclear region from which a stream of dust grains issued, and two halos of differing brightness which encircled the central condensation of the nuclear region. It was found that when the comet was near its perihelion, as observed in April 1910, its tail contained streams of dust grains around which extended a luminous circular envelope of parabolic appearance. The fountain model has ben used to qualitatively interpret the parabolic shape of the comet's tail.

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