Re: New bright satellite

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 25 Jul 2017 10:56:12 +0200
On Jul 11 I wrote:
The sat wil rotate in all 3 directions and by reflecting the sunlight it
could reach
mag -10, much brighetr than ISS (mag -4) or the Iridium-1's (mag -8).

See the article on Spaceflight101.com with 2 video's and photo's.

>>
This is unlike the Iridiums-1 that had a stable orientation and reflect the
sunlight from the antennae panels in a small path over the earth.

As MAYAK would be rotating in all 3 directions I think the reflections will
spread out over the earthsurface and one must be lucky to see them.

The video on Spaceflight101.com suggest otherwise. But only real
observations could clarify that.

regards,
Leo


2017-07-25 2:49 GMT+02:00 Allen Thomson via Seesat-l <seesat-l_at_satobs.org>:

>
> > If Mayak deployed, it could be that (like Iridium flares) the reflection
> is very specular and directional, so only visible in a narrow zone.
>
>
> I think that's right. If Mayak is as depicted in
> http://space.skyrocket.de/doc_sdat/mayak.htm , then it will only be
> extraordinarily bright when one of the faces of the tetrahedron happens to
> be oriented to reflect the sun at the observer -- or, I suppose, a bright
> part of the Earth, like sunlit clouds. Otherwise the faces would be
> reflecting black space and you'd just see the small main body and perhaps
> not even that if it happened to be behind or shaded by the tetrahedron.
> Getting light curves would be of interest.
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Received on Tue Jul 25 2017 - 03:56:52 UTC

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