Re: New bright satellite

From: Leo Barhorst via Seesat-l <>
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 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 suggest otherwise. But only real
observations could clarify that.


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

> > 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
> , 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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