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> LEONID SOUNDS
>
> Richard Nolthenius writes:
>
>   Come to think of it, a contributor to the lack
> of sounds I heard for the ´66 storm may have been
> that we had brisk cold winds which created a background
> of noise in my ears. I´d be interested in just how loud
> these Ohio sounds were.
>
> But James Young, on nearby Table Mountain, writes:
>
> During my 1966 Leonid meteor shower experience, the 6 people at Table
> Mountain who witnessed that shower, including myself, never heard a
> single sound associated with the meteors.  We were very close to the
> peak of the shower (SW USA), and only can remember feeling like we all
> needed ´hard hats´!  See and read more of the 1966 ´shower´
>
>     http://www.qsl.net/w7ftt/66leonid1.html
>     http://www.qsl.net/w7ftt/66leonid2.html
>
> I offer no explanation of the ´sounds´ heard by others, but we were on
> the top of a mountain away from ANY extraneous noises.  I had very keen
> hearing (then!), so believe I would have heard even the slightest of
> noises had they been present where we were.  Of the 22 fireballs seen,
> one exploded at magnitude -12, nothing was heard.
> _____________________________________________________________
>
> LUNAR IMPACTS:
>
> Richard Nolthenius also made a calculation of possible lunar
> impact rates:
>
> This is paraphrased from a longer account that will probably be
> placed on http://www.lunar-occultations.com/iota:
>
> One might observe 9% of the projected area of the Moon, to
> minimize problems with glare from the bright side.  I
> calculate that at the peak of a 1966-style storm, one would
> see an 8th-mag. or brighter impact every 25 seconds.  With
> a more most ZHR of 10,000/hour, one could expect an 8th-mag.
> or brighter impact about every 3 minutes.
>
> David:  But I think the predictions call for a rate of 1000
> to 2000/hour this year, so it might be more like once every
> 15 to 30 minutes.  I think it´s still worth watching for.
> Also, Jay Miller asks:
>
> Since the Moon is trailing the Earth in its orbit around the
> Sun by about 200k miles, it will hit the peak of the Leonids
> after the Earth. Therefore:
>
> 1. How much later will the peak hit the Moon and,
> 2. Since we should know when the peak hits the Earth, we would
> know when to look for impacts on the Moon?
>
> Answer:  At 29 km/sec velocity in orbit about the Sun, the
> Moon should get the same part of the Leonids that hit the Earth
> almost 3 hours later.  So if the peak is around 2h UT of Nov. 18,
> then the lunar peak should be at 5h UT Nov. 18, when the Moon
> will be quite low along the North American East Coast, but well-
> placed for the central and western part of the continent.  But
> especially for fireballs we don´t know when the peak will be;
> last year, the fireball rate was rather flat (and reasonably
> high) for the better part of 24 hours.
>
> Note that 6th-mag. ZC 3275 is 45 Aquarii, the brightest star
> that will be occulted for most of North America east of the
> Rocky Mountains, at 8:15 pm EST in Maryland, during the next
> two evenings.  That will be a good time to start lunar
> observations for meteor impacts, right after recording that
> occultation (we can´t predict the impacts, but the
> occultations WILL occur on schedule).
> _________________________________________________
>
> LEONID WEBSITES
>
> There will be some real-time updated Web sites giving Leonid
> activity.  Some examples:
>
> http://www.amsmeteors.org/leo99update.html
> http://sci.esa-int//leonids
>
> And Bruce Berger distributed the following to the Amateur Telescope
> Makers of Boston list:
>
> I thought I´d share some of these links.
>
> http://www.leonidslive.com/
> http://www.thursdaysclassroom.com/11nov99/meteorcounts.html#observe
> http://www.spacescience.com/newhome/headlines/ast11nov99_1.htm
> http://www.spacescience.com/newhome/headlines/ast10nov99_1.htm
> http://www.skypub.com/sights/meteors/leonids/9911leo.html
> http://www.skypub.com/sights/meteors/leonids/9911planwatch.html
> http://www.skypub.com/sights/meteors/leonids/9911leolincoln.html
> http://www.skypub.com/sights/meteors/3showers.html
> http://medicine.wustl.edu/~kronkg/leonids.html
> http://medicine.wustl.edu/~kronkg/leonidhowto.html
> http://www.aero.org/leonid/leonidsFAQ.html
> http://www.imo.net/leo99/leo99index.html
> http://ssd.jpl.nasa.gov/leonids.html
> http://home.wxs.nl/~dms-web/leonids/1999/first.html
> http://www.leonids.net/1998/live/en/
> http://www.gsoft.com.au/leo_src.html
>
> Bruce Berger
> berger@mediaone.net
> ________________________________
>
> David Dunham, IOTA
> Joan and David Dunham
> 7006 Megan Lane
> Greenbelt, MD 20770
> (301) 474-4722
> dunham@erols.com
>