Hello everybody,
I have observed Lacrosse 5, and the other members of this series, on
many occasions without seeing any flaring or fading. As I observe from
approx 33S,152E@27m, and I don't recall any southern hemisphere reports
of flaring or fading, I am wondering if this phenomenon is latitude
dependent?
Gordon
Newcastle, Australia
---- Original Message -----
From: "Gerhard HOLTKAMP" <grd.holtkamp@t-online.de>
To: <SeeSat-L@satobs.org>
Sent: Saturday, October 20, 2007 4:18 AM
Subject: Re: Lacrosse-5 flares and disappearance.
>
> On 18-OCT-07 Bjorn Gimle wrote (concerning the Lacrosse-5
disappearances):
>
> >I don't quite follow your arguments or conclusions (are there any?)
here.
>
> >During a pass Lacrosse can change its local sun-observer attitude by
about a
> >degree/s.
> >Do you mean that the disapperances occurred at nearly the same
attitudes?
> >In that case it would be a local observer event?
> >Have there been any observations at the same moment from distant
observers,
> >to prove that it is a satellite event?
>
> What I meant was that if Lacrosse 5 keeps a local attitude (pointing
with one
> side always toward the center of the Earth and with another side
always into
> the direction of flight) than within this local satellite coordinate
system
> the sun would have moved by just 1 degree over the seven minutes of
> observations starting at 20:12:15 UT, 14-AUG-07. During that time the
angle
> between the sun, the satellite and an observer on the ground would of
course
> change much more. What is interesting about Lacrosse 5 is that there
have
> been at least two cases where two or more observers at locations
hundreds of
> km apart have seen a sudden (within two or three seconds) decrease in
> brightness of that satellite at exactly the same time (while the
satellite
> was still lit by the sun of course). We are still at a loss of how to
explain
> this.
>
> Gerhard HOLTKAMP
> Darmstadt, Germany
>
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