Fwd: Sighting from Argentina.

From: ruben lianza via Seesat-l <seesat-l_at_satobs.org>
Date: Mon, 3 Sep 2018 10:49:25 -0300
*Dear Björn:*

*Thanks again for your invaluable feedback.  We had already ruled out the
possibility of it being Tiangong 1 because I was closely monitoring it till
its last orbit and it should have travelled at least another 25 minutes on
its last track for to fall on Argentinian territory (too bad since I would
have loved to pick up a small piece of it to display it on the acrilic
stand of my Tiangong 1 1:48 scale model, same as I did with a piece of
Salyut 7 which felt geographically close, in February 1991).*

*On this video on a TV interview (sorry it´s in Spanish)
https://www.youtube.com/watch?v=Yb7_cn94Mnc&feature=youtu.be
<https://www.youtube.com/watch?v=Yb7_cn94Mnc&feature=youtu.be>  even if you
have a hard time understanding the Spanish chat,  at least you can see
three of my models on demised Space Stations: Salyut 7, Tiangong 1 (both on
scale 1:48) and Skylab (scale 1:100).   Notice that Salyut 7 has a piece of
its own debris sitting on the top of the acrilic base.  *
*Displaying space models with a piece of the real space vehicle,  might
become a growing new hobby (LOL).*

*Back to the Nelsa Carmody´s picture (
http://satobs.org/seesat_ref/misc/FOTO_CASO_NELSA_CARMODI.jpg
<http://satobs.org/seesat_ref/misc/FOTO_CASO_NELSA_CARMODI.jpg> )  I would
much appreciate to hear opinions from you and perhaps other SeeSat
members,  especially about the trail´s shape, brightness and colour
(slightly brownish on the final tip to the right). I wonder: the round
bright dot in the center of it.... could correspond to a  flare center
(Iridium-mirror-like) or, instead, it was an explosion of material under a
peak of aerothermal breakup?*


*I thank you all in advance for any opinions.*


*Wish the best of everything to you all.*

*Rubén*
El lun., 3 sept. 2018 a las 9:40, Björn Gimle (<bjorn.gimle_at_gmail.com>)
escribió:

> Apologies - I was thinking backwards in many ways.
>
> The spacecraft was of course travelling W-E, so the predicted pass time of
> 00:30 is consistent with decay near Hawaii at 00:16.
> So this unfortunately outrules Tiangong !
>
> --------------------------------------------------------
> Björn Gimle, COSPAR 5919
> 59.2617 N, 18.6169 E, 51 m
> Satellite observation formats described:
> http://www.satobs.org/position/IODformat.html
> ---------------------------------------------------------
> Den mån 3 sep. 2018 kl 12:00 skrev Björn Gimle <bjorn.gimle_at_gmail.com>:
>
>> I did what I should have done initially - check the SpaceTrack catalog of
>> [predicted] decays.
>> Indeed, the Chinese space station Tiangong 1 reentered 00:16 near Hawaii
>> and passed Argentina before.
>>
>> But the TLE predicted time, and the angle, are mysterious.
>> The elset is from day 91.67
>>
>> Ted, apart from that, is the observed track (and the 15 minutes to decay)
>> consistent with the decay ??
>>
>> /Björn
>> --------------------------------------------------------
>> Björn Gimle, COSPAR 5919
>> 59.2617 N, 18.6169 E, 51 m
>> Satellite observation formats described:
>> http://www.satobs.org/position/IODformat.html
>> ---------------------------------------------------------
>>
>>
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Received on Mon Sep 03 2018 - 08:50:05 UTC

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