Question on iridium sats colors

Michael Boschat (
Sat, 26 Jun 1999 16:38:39 -0300 (ADT)


 I've noticed that some Iridium satellites as they begin to diminish
in brighteness flash a tint of red color. I was wondering if this was
just do to the solar panel composition and the angle the sunlight hits
it or more of an atmospheric effect?