Re: Any active tethered satellites?

From: Björn Gimle via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 29 Oct 2017 11:28:24 +0100
These two were launched separately, and should not be tethered.

But according to predictions yesterday (for my location!) they were just 13
km apart, and practically in the same orbits - cross-track separation +- 3
km or so.

NOSS 3-x satellites are 80-120 km apart, and their orbits intertwine, so
they usually also have lateral separation.

Attached spreadsheet is only useful near culmination, and is based on
angular separation (measured by HeavenSat tool)

(An better tool is Rob Matson's (16-bit?) COLA program)

torsdag 26 oktober 2017 skrev Young, Brad via Seesat-l <seesat-l_at_satobs.org
>:

> Bob King said:
> > I have a friend who saw something in the sky last night that sounds like
> a tethered satellite mission. I used to enjoy watching TiPS with "Ralph"
> and "Norton." Are there any active tethered satellites today?
>
> Could this have been TerraSAR-X and Tandem-X? Location and time?
>
> http://satobs.org/seesat/Oct-2017/0103.html
>
> Brad Young Visual:
> Bright:20 x 80 Celestron binoculars
> Dim:22" f/4.2 UC Obsession
> COSPAR 8336 =TULSA1 +36.139208,-95.983429 660ft, 201m
> COSPAR 8335 =TULSA2 +35.8311  -96.1411 1083ft, 330m
> Remote Imaging:
> 7779 32.92 -105.528 7000 Mayhill, New Mexico USA
> 7778 -31.2733 149.0644 3400 Siding Spring, NSW, Australia
> 7777 38.165653 -2.326735 5150 Nerpio, Spain
> 7780 37.07 -119.4 4610 Auberry CA USA
> 7782 -32.008 -116.135 984 Perth, WA, Australia
> Numbers above and methods explained at: http://www.satobs.org/seesat/J
> an-2015/0074.html
>
>
>
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Received on Sun Oct 29 2017 - 05:29:18 UTC

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