[AZ-Observing] ISS Pass Tonight (7/21)

The Heavens Above site (http://www.heavens-above.com/) shows an excellent
pass of the International Space Station for all of Arizona, and
particularly Phoenix, where it will pass nearly through the zenith.  It
will begin low in the southwest at 8:13, pass nearly overhead at 8:16, and
disappear in the northeast at 8:19.  The time is about 40 minutes after
sunset, which means it's dark enough to see it easily, but the sun is
still high enough to illuminate the ISS for the entire time.

At its closest it will be less than 250 miles away.  This is when it will
show a definite size and shape at 50x or higher through a telescope.  It's
also when it is moving at 1 degree per second, making it a challenge to
follow.

Clear skies?
Tom

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