Starlink Flare Hypothesis

From: Anthony Mallama via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 19 Apr 2020 22:55:31 -0400
Andreas,

With regard to "do you mean these fluctuation in brightness?"

The Starlink flares I studied were extremely bright at magnitudes -3 to -8.
So, they were much more than an ordinary brightness fluctuations. I cannot
determine the magnitude of the satellite on your picture but it appears
very bright. Venus is currently between magnitude -4 and -5. So, if Venus
was in the sky at the same time you can compare it to that.

With regard to "This peaking was also for all Starlink sats in the same
hemispherical region and moved a bit by time towards the alread set Sun."

This might be similar to the celestial geometry of the other flares but I
cannot tell for sure based on this information. If the azimuth of the
flaring satellites and that of the Sun were approximately equal, then they
are probably alike.

In any case, it is very interesting that Starlink flares now seem to be
almost common. I am not aware of any flares being reported before this
month. Perhaps other people know of them?

Thank you for reporting your observations.

Tony Mallama
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Received on Sun Apr 19 2020 - 21:56:38 UTC

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