SV: ETS-6 Flashes

From: Bjoern Gimle (
Date: Sun Jan 16 2000 - 13:05:24 PST

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    >shadow entry about 22:42 EST (03:42 UTC on Jan 17) a few degrees from
    >Sirius. My question is at what point should we "expect" to see these
    >fabled bright flashes? Our local weather forecast is for cold
    >and, with the moon "contaminating" the sky, it's not the kind of night
    >to sit outside for any length of time.
    >If the earlier brightenings were so easily visible in, say, Maryland,
    >is not much south of us, logic (?) would imply that we ought to be able
    >to see such a show up here.
    Every observer should report their date, location, and SIDERIAL positions of
    the flashes: If the spin axis is only slowly precessing, like our direction
    to the Sun, flashes will occur only a few degrees away on day 3 from that
    obs. They will also sweep a large part of a small, or larger, or great
    circle on the stellar sphere, and accurate observations from different
    places/passes will allow (Rob Matson et al) to determine the spin axis and
    extend/improve predictions.
    If siderial position is not given, location, date and TIMES will determine
    the positions. Michel Jacquesson at lat +49 saw them four degrees over
    epsilon Eridani, to ten degrees left/above gamma Eridani.
    Some others,earlier,  have mentioned Rigel. I have failed twice, probabaly
    looking when it left Eridani. If it is clear tomorrow, I'll start looking
    right of eps Eri (a little lower because of my latitude)
    If the circles swept out by the spin are roughly parallell to the track I
    may see nothing, or at a completely different place. If they are
    perpendicular, they should be seen over most of the world, and ACCURATE
    flash times may help predictions.
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