Re: Ariane 5 launch shortly

From: C. Bassa via Seesat-l <>
Date: Wed, 13 Dec 2017 16:11:52 +0100
Hi Rainer, Andriy,

On Wed, Dec 13, 2017 at 3:02 PM, rkresken--- via Seesat-l
<> wrote:
> You have any clue whether the stack was illuminated or in the earth's shadow over europe?

It would've been partly. The elset below takes the inclination, RA of
the ascending node and argument of perigee of the now public
43055/17079A elset at the time of circularization and sets a 200km
perigee and 22920km apogee. That trajectory would've been in the
shadow between 19:00UT and 19:37UT, with the transfer orbit insertion
around latitude 24 deg North. Eclipse ingress around 19:00UT would be
within 30 degrees from the Zenith for Western Europe, at a range of
1000km. Eclipse egress would not have been visible.

Jonathan McDowell notes that the core stage almost does a full orbit
( so would
also have been visible (though at a lower altitude).


1 78001U          17346.92378472  .00000000  00000-0  00000-0 0    02
2 78001  57.0000 306.9000 6332877  29.5000 180.0000  3.61357455    08
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Received on Wed Dec 13 2017 - 09:12:34 UTC

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