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Re: (meteorobs) Yorktown meteors
Since the Solar Longitude is measure eastward from the current vernal equinox it
too must be precessed like all celestial coordinates. I hope that is right.
However if it is wrong I am sure someone that might not otherwise respond will
jump onto it. 8-) Clear skies and good seeing! Robert
Dave Hostetter wrote:
> While doing some reading over the weekend, I came across a reference to a
> shower of meteors that occurred on the evening of October 17, 1781, the
> night a truce was declared at the end of the battle of Yorktown in the
> American Revolution. I think these were probably the Orionids because using
> the Orionids' solar longitude of 208 degrees yields a peak that year just
> after 23 hours UT on the 17th, which would have been shortly after sunset in
> Virginia (the Orionid radiant would have risen there about 10 PM). My
> question: is 208 degrees the correct solar longitude to use? Has the solar
> longitude of the Orionids' peak varied over the centuries, and if so, by how
> much?
>
> Dave Hostetter
>
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