Re: Shuttle and ET

From: Bram Dorreman (bram.dorreman@skynet.be)
Date: Wed Jun 05 2002 - 18:40:35 EDT


My observations were:
At 21:42:16 (UT) two objects become visible:
- upper object mag. +0.5 constant
- lower object mag. +1.5, variable and orange, photometric period 21
seconds.
(may be I missed one maximum).
Close to shadow entry:
- upper object mag. -1.5
- lower object mag. -0.5 at brightest
At 21:44:34 (UT) lower object emerses, soon followed by upper object
I can follow upper object another 56 seconds using my 7 x 50 binoculars.
I see three times an about 0.7 seconds lasting V-shaped fluffy, with
possibly 6 seconds between them.

Bram Dorreman,
COSPAR 4160 (Achel 1):
51 16' 45.5" N (51.2793 N),
5 28' 36.6" E (5.4768 E)

-----Original Message-----
From: Leo Barhorst <leobarhorst@zonnet.nl>
To: seesat-l <seesat-l@satobs.org>
Date: donderdag 6 juni 2002 0:06
Subject: Shuttle and ET


>Just saw the launch of Endeavour on NASA-TV via Internet.
>At about 18 minutes after launch I got outside and was lucky that
>the sky had broken a bit. few stars could be seen.
>At 21:44 UT I saw low on the western horizon a brillant light in
>between some clouds.
>After emerging from this cloud I saw the shuttle and about half a
>degree lower the External Tank.
>STS-111 was about mag -4, as bright as Venus. The ET was
>dark orange and about mag 2. After about 30 sec the ET became
>brighter and got to mag -1. The both of them passed just under
>Spica (Alpha Virgo).
>A beautifull sight the very bright white dot of Endeavour and the
>somewhat dimmer bright orange dot of the ET moving close
>together.
>The ET stayed several seconds that bright, dimmed to about mag 4
>again and got again brighter to about mag 1 and then dimmed
>gradually until disappearing in the earth's shadow. Estimated period
>about 10 seconds. Haven't seen these brightness variations with ET's.
>Was is slowly tumbling?
>Several seconds later the shuttle also faded away.
>
>It was worth it staying up late to see the launch and the nice pass of the
>two sats. Had they launched on time several days ago they would have
>been in shadow while passing over here.
>
>
>Greetings and clear, dark skies
>Leo Barhorst Medemblik
>52.76350 N  5.09114 E  2 m ASL
>http://www.home.zonnet.nl/leobarhorst/index.html
>
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