Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981p%26ss...29.1089s&link_type=abstract
Planetary and Space Science, vol. 29, Oct. 1981, p. 1089, 1090.
Astronomy and Astrophysics
Astronomy
2
Accommodation Coefficient, Astronomical Netherlands Satellite, Lift, Satellite Perturbation, Inclination, Orbit Perturbation, Satellite Configurations, Solar Arrays
Scientific paper
The changes of the orbital inclination of the satellite 1974-70 A show some peculiarities which cannot be explained by the usual disturbing effects (odd zonal harmonics, lunisolar perturbations, rotation of the atmosphere). The effect of a lift force normal to the orbital plane explains the residual inclination variations if a changing value of the thermal accommodation coefficient is introduced. The theory agrees well with the observations if the coefficient rises from a low value (approximately 0.1) corresponding to a quasi-specular reflection of the molecules incident to the satellite surface to higher values (greater than 0.9) characterizing a diffuse reflection.
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