Re: Satellites eclipsed Aug.11

Rick Brown (
Sun, 01 Aug 1999 11:11:03 -0500

Bjoern Gimle wrote:

> I have written a program to find all satellite positions (at fixed
> intervals)
> closer than a specified distance from the Sun-Moon eclipse line.
> This version zero does not account for the width of the shadow cone, but
> for a LEO on the sunlit part of the Earth it is just a few hundred km, so
> it is still easy to find the candidates.

If you have Sienna Software's "Starry Night," you can do some extra checking on
the candidates that Bjoern provided.  For example, I used the "Goto" feature to
"hop on board" Mir at the designated time, and from there I looked directly at
the sun (using my virtual mylar glasses, of course :-)), and ran the clock
bacwards and forwards.  I saw that from this vantage point the moon nearly, but
never quite totally, covers the sun--which indicates that Mir will not quite be
eclipsed.  This of course might change as updated TLE's become available.

- Rick