We clarify a role of the
Earth reflected radiation heating for the thermal effects
perturbing the motion of the LAGEOS satellite. A small, but not
negligible, part of the constant drag acting on the satellite and
detected via the orbit analysis is attributed to this phenomenon.
Contribution to the observed eccentricity excitations is
very small in contrast to the hopes raised in the recent analysis
by M\'etris et~al. [1995].
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