Direct computation of orbital sunrise or sunset event parameters

Details Direct computation of orbital sunrise or sunset event parameters Direct computation of orbital sunrise or sunset event parameters

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986dcos.rept.....b&link_type=abstract

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Statistics

Computation

Mission Planning, Occultation, Orbital Mechanics, Sun, Astronomical Catalogs, Ephemerides, Sidereal Time, Spacecraft Instruments

Scientific paper

An analytical method is developed for determining the geometrical parameters which are needed to describe the viewing angles of the Sun relative to an orbiting spacecraft when the Sun rises or sets with respect to the spacecraft. These equations are rigorous and are frequently used for parametric studies relative to mission planning and for determining instrument parameters. The text is wholly self-contained in that no external reference to ephemerides or other astronomical tables is needed. Equations are presented which allow the computation of Greenwich sidereal time and right ascension and declination of the Sun generally to within a few seconds of arc, or a few tenths of a second in time.

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