You could have seen an Iridium flare if you were within an hour or so of
sunup/sundown- they start as a fairly dim point, brighten to a maximum and
then diminish down to nothing. They seem to move fairly quickly because the
satellites are fairly low. We see them fairly frequently here in the desert-
a bright one (Mag -7 or so) in quite spectacular. Go to
www.heavens-above.com for details. They have a means for you to input your
position (needs to be fairly accurate) and you can see what satellites and
flares will be visible in your area.

--
Jim Atkins
Twentynine Palms CA USA

"Outside of a dog, a book is man's best friend.
Inside of a dog, it's too dark to read."
- Groucho Marx