Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986plas.rept..185y&link_type=abstract
In NASA, Washington Reports of Planetary Astronomy, 1985 p 185 (SEE N87-12407 03-89)
Astronomy and Astrophysics
Astronomy
Astrometry, Halley'S Comet, Planet Ephemerides, Reference Stars, Stellar Orbits, Giacobini-Zinner Comet, International Sun Earth Explorer 3, Tracking Networks
Scientific paper
The Astrometry Network of the International Halley Watch (IHW) has organized and coordinated more than 300 astrometric observers from 47 countries in an effort to provide for accurate positional information on comets Halley and Giacobini-Zinner. This information is being used to constantly update the existing orbits and ephemerides for the various flight projects to these two comets and also for the other ground-based observers within the IHW organization. The astrometric data, as well as the resultant orbits and ephemerides, are being distributed to all requesting observers and they will be cataloged within the general IHW archive system.
Harrington Robert
Marsden Brian
West Richard
Yeomans Donald Keith
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