The Contribution of Asteroids to the Infrared Astronomical Sky Survey
Air Force Cambridge Research Laboratories, Air Force Systems Command, United States Air Force, 1973 - Asteroids - 7 pages
The use of any infrared sensor for sky survey measurements is complicated by signals from objects in the solar system. The identification of planets is trivial but asteroids and other small bodies form a large class of objects which cannot be recognized as readily. In the 8- to 30-micron region they are an especially significant possible source of signals. With a median period of 4.6 years, asteroid motions of about a quarter of a degree per day are typical, implying that each observation must be treated independently to properly identify asteroids. As infrared detectors become more sensitive, previously unknown asteroids will appear and must be identified as such. (Author).
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11 Microns 1782 asteroids Air Force Air Force Cambridge Assume asteroid motions Asteroids Brighter asteroids will appear Astronomical Sky Survey Average Distribution Average Number become more sensitive calculated Cambridge Research Laboratories comparing Contribution of Asteroids dark Data points represent deficiency defined degree per day detectability determined diameter distance distribution distribution unlimited DOCUMENT ELEMENT emissive processes emissivity emitted excess expected Figure full phase given heat hemisphere Infrared Astronomical Sky infrared detectors become known orbital parameters L. G. Hanscom Field large class larger LINK March Massachusetts Matson measured median period Mercury Moon Murdock Number of Asteroids observation overestimate phase angles phase curve Photographic Magnitude planets is trivial predicted present probably quarter region reliable REPORT rotation sensor for sky shown shows signals similar sky survey measurements solar Source Limit surface thermal distribution TITLE treated independently Unclassified Security Classification United States Air USAF wavelength dependence