"IHW" redirects here. For the Australian band, see In Hearts Wake.
Halley's Comet, named after English astronomer Edmund Halley who first demonstrated its periodicity, returns to the vicinity of the Sun and Earth approximately every 76 years. Since comets are believed to be the most primordial objects in the solar system, their study is of great importance to planetary science. At the time of the 1986 return (technically, "apparition") of the comet, astronomical telescopes and related instrumentation were vastly more sensitive than for any previous apparition. Consequently, the International Halley Watch (IHW) was organized to stimulate, standardize, collect, and archive observations of the comet.
The initial plans were formulated by scientists at NASA's Jet Propulsion Laboratory in California, where a Lead Center for western hemisphere observations was established with support from NASA; a corresponding Center for eastern hemisphere observations was funded by the Federal Republic of Germany at the Remeis Observatory (code 521) in Bamberg. An international Steering Group was established, and a set of Discipline Specialists was chosen to organize observing networks, coordinate their activity, and ultimately to collect and archive their data. This effort was endorsed by the International Astronomical Union in 1982, and cometary scientists were chosen as Discipline Specialists in the areas of Astrometry, Infrared Studies, Large Scale Phenomena, Near-Nucleus Studies, Photometry and Polarimetry, Radio Studies, Spectroscopy and Spectrophotometry, Meteor Studies, and Amateur Observations. The IHW also coordinated with the space missions to the comet, Giotto by the European Space Agency and Vega by the Soviet Union and collaborating countries. The collected data were subsequently published as a digital archive on CD-ROMs.
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sensitive than for any previous apparition. Consequently, the InternationalHalleyWatch (IHW) was organized to stimulate, standardize, collect, and archive...
leading observers of comets and national coordinator during the InternationalHalleyWatch in 1986. Cavagna was also a lecturer at the planetarium of Milan...
Edmond (or Edmund) Halley FRS (/ˈhæli/; 8 November [O.S. 29 October] 1656 – 25 January 1742 [O.S. 14 January 1741]) was an English astronomer, mathematician...
and 1958 IHW – (organization) InternationalHalleyWatch, an organization created to coordinate observations of Halley's Comet in 1986 ILOM – (spacecraft)...
the scale of the international effort to observe the comet would not be surpassed until the 1986 InternationalHalleyWatch for Halley's Comet. Of particular...
a celestial mechanician at JPL and astrometry-expert of the InternationalHalleyWatch. The official naming citation was published by the Minor Planet...
web}}: CS1 maint: archived copy as title (link) Halley (1922) Halley's Bible Handbook with the New International Version, p936. Keck, Leander E. (1998). The...
defect on the soccer field while Halley, Scarlett and other classmates watch helplessly. This event changes the lives of Halley and Scarlett forever. While...
the 2011 maximum of the Eta Aquarids, courtesy of the International Meteor Organization Your Guide To Watching This Week's Halley's Comet Meteor Shower...
Part Two (2024). In 2011, Zendaya released the singles "Swag It Out" and "Watch Me", the latter a collaboration with Bella Thorne. She signed with Hollywood...
2024). "The Thundermans Report for Super Duty in Revival Movie Trailer — WATCH". TVLine. Retrieved February 19, 2024. D'Alessandro, Anthony (August 12...
Gear. In the book, written by Alexander Frost, he is Marine Captain Justin Halley. This version of the character is non-canon and is not referenced by other...
concluded that Venus was closer to Earth than the Sun. In 1677, Edmond Halley observed a transit of Mercury across the Sun, leading him to realize that...
title was announced in July 2019 along with Olsen's involvement, while Jade Halley Bartlett was hired to write the film that October. Derrickson stepped down...
Archived from the original on June 28, 2018. Retrieved June 27, 2018. Halley, Jim (November 11, 2017). "Top center Bol Bol transfers from Mater Dei to...
when Brenda invites her rough and aggressive younger stepsister Nadine (Halley Wegryn Gross) into the group without checking with Shirley. She soon starts...
Archived from the original on August 4, 2023. Retrieved July 31, 2023. Halley, Jim (March 31, 2017). "No. 2 seed Hamilton Heights Christian holds off...
daughter (recurring season 1; main seasons 2–6). Also portrayed by Iyana Halley as a young adult (season 6) Melanie Liburd as Zoe Baker: Beth's cousin and...
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