![]() ![]() 1O of this week, still some 48O million miles from the sun. ![]() The comet will pass the average distance of Jupiter from the sun on Jan. 27, at 57.6 million miles, and the following April 11, at 39 million miles. It will make close approaches to Earth this coming Nov. 9, 1986, at distance of 53.1 million miles. Halley has been on the inbound leg of its 76-year orbit around the sun since 1948 perihelion will occur on Feb. The meeting is expected to be the last general gathering of the IHW before perihelion, or Halley's closest approach to the sun. Representatives of the two lead centers will be joined at the meeting by IHW discipline specialists (in such fields as astrometry, photometry and polarimetry, radio science and spectroscopy) representatives of the European, Japanese and Soviet spacecraft missions to Halley and members of the IHW Steering Group. These ground-based studies will be coordinated with airborne, Earth-orbital and spacecraft flyby observations. The IHW organization coordinates ground-based observations by professional and amateur Halley watchers around the world. JPL is the Western Hemisphere lead center for the organization the University of Erlangen-Nurnberg in West Germany serves as Eastern Hemisphere lead center. 1O and 11 at the Jet Propulsion Laboratory to discuss the status of the IHW. The countdown has begun in anticipation of the return appearance of Halley's comet, as scientists from around the world gather this week in Pasadena for general meeting of the International Halley Watch.įifty leading cometary scientists will meet on Jan.
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