[IAUC] CBET 2401: 20100804 : 2010 PERSEID METEORS

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                                                  Electronic Telegram No. 2401
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Room 209; Dept. of Earth and Planetary
 Sciences; Harvard University; 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbat en iau.org; cbatiau en eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


2010 PERSEID METEORS
     P. Jenniskens, SETI Institute; and J. Vaubaillon, Institut de Mecanique
Celeste et de Calcul des Ephemerides, Paris, report that the annual Perseid
shower (IAU Shower 7) is expected to peak with a broad maximum around Aug.
13d03h20m UT (solar longitude 140.14 deg, equinox 2000.0), with best viewing
conditions in Europe in the early morning hours, while numerous long trails
will be visibile in the early evening hours in (eastern) North America.  In
addition, a brief 1-hour period of elevated rates can occur from an encounter
with dust ejected by comet 109P/Swift-Tuttle in 1479.  Current models put
this dust trail just outside of the earth's orbit.  The peak time is
predicted for Aug. 12d16h49m UT (solar longitude 139.7292 deg), which is an
update from Jenniskens (2006, *Meteor Showers and their Parent Comets*, p.
657).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2010 CBAT
2010 August 4                    (CBET 2401)              Daniel W. E. Green