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RE: (meteorobs) Perseid stream spread (was: NAMN Notes: July 1999)
Lew,
1.26 degrees is still a mighty small area!
----------
From: Lew Gramer[SMTP:dedalus@latrade.com]
Sent: Tuesday, July 13, 1999 4:19 PM
To: Meteor Observing Mailing List
Subject: (meteorobs) Perseid stream spread (was: NAMN Notes: July 1999)
>The actual radiant diameters for the following showers
>determined photographically are:
> Perseids - 1.26 deg
This has been an extremely interesting thread, folks! Thanks
to Wayne, George, Jim et al for the discussion. But the size
of the Perseid radiant in particular was a real surprise to
me: obviously, this is a VERY well-studied stream, so radiant
spread is clearly due to a wide diversity of orbital elements
among the stream particles themselves as opposed to errors or
uncertainties in measurement.
So why DO the PERs have such spread in orbital elements??
Lew
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end
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