Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984coas.conf....4y&link_type=abstract
In its Cometary Astrometry p 4-6 (SEE N85-25015 14-89)
Astronomy and Astrophysics
Astronomy
1
Astrometry, Ephemerides, Flyby Missions, Giacobini-Zinner Comet, Halley'S Comet, International Cooperation, Astronomical Catalogs, Celestial Mechanics, Data Acquisition, Orbits
Scientific paper
In an effort to test the techniques and communication lines of the entire International Halley watch (IHW) organization, comet Crommelin was selected as a comet that would act as a trial run for the future observations of comets Halley and Giacobini-Zinner. Astrometry network members were asked to provide a few observations of comet Crommelin during a period within a few months on either side of the comet's perihelion passage. Special comet Crommelin star catalogs were distributed and each observer was asked to observe, reduce and transmit their data as quickly as possible. Some 372 astrometric observations from 42 different observatories were received at the orbit determination center. Orbit information and up-to-date ephemerides were computed and distributed by the same communication channels. The comet Crommelin trial run was successful in pointing out some areas that need to be improved to make the data more accurate and the communication channels more efficient.
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