Optical observations of geostationary spin-stabilised satellites

Details Optical observations of geostationary spin-stabilised satellites Optical observations of geostationary spin-stabilised satellites

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.147..359g&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 147, no. 2, Aug. 1988, p. 359-379.

Astronomy and Astrophysics

Astrophysics

2

Communication Satellites, Light Curve, Solar Arrays, Spin Stabilization, Synchronous Satellites, Visual Observation, Australia, Brightness, Eclipsing Binary Stars, Fast Fourier Transformations, Periodic Variations, Reflectance

Scientific paper

The first two Aussat communication satellites have been located and their optical variability studied. It is found that the objects are exceptionally bright for the few days each year when an ideal solar mirror reflection occurs for the ground latitude. At this time their about 1.1s spin periods are detectable in real time, and FFT analyses show a range of much faster periodic features. The frequencies of these components have been identified with the arrangement of the solar cells on the outer surface of the Aussat spacecraft. Possible applications for these objects are mentioned and a list is given of other suitable spinning spacecraft.

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