Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aiaa.conf..632h&link_type=abstract
IN: 1992 AIAA/AAS Astrodynamics Conference, Hilton Head Island, SC, Aug. 10-12, 1992, Technical Papers (A92-52051 22-13). Washin
Astronomy and Astrophysics
Astronomy
Geosynchronous Orbits, Lunar Eclipses, Synchronous Satellites, Mission Planning, Orbital Lifetime, Solar Energy, Spacecraft Power Supplies
Scientific paper
A simple method is used to predict and characterize lunar eclipses of the geosynchronous equatorial ring from 1992 to the year 2010. The eclipsing dates and times were determined by first eliminating those months in which lunar eclipses were not possible. Then, using the same analysis, the months when eclipsing of a geostationary satellite is possible, but does not occur were eliminated. The remaining times when lunar eclipses were possible were investigated further to determine the length of the eclipses and the region of longitude over which they occur. The variation in eclipse length with longitude was examined for the longer eclipses in order to determine the feasibility of changing a satellite's longitude in order to avoid a lengthy lunar eclipse. The method used herein is applicable to situations where long periods of time must be surveyed quickly for lunar eclipses, as when considering eclipsing constraints in a launch window analysis problem. Once problematic eclipses are identified with this method, a more exact propagation analysis can be performed.
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