Electronic Telegram No. 2416
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@iau.org; cbatiau@eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


2010 PERSEID METEORS
     P. Jenniskens, SETI Institute, reports that Geert Barentsen (Armagh
Observatory) has pointed out that the International Meteor Organization's
summary of visual meteor observations (which can be viewed at website URL
http://www.imo.net/live/perseids2010/#peak) shows that the Perseid rate
increased around Aug. 12d17h18m +/- 32m UT by about 60 +/- 15 meteors/hr (ZHR)
above normal annual shower activity levels on that date (solar longitude
139.748 +/- 0.022 deg, equinox 2000.0), in good agreement with predictions for
the earth's crossing of the 1479 dust ejecta from comet 109P/Swift-Tuttle
(cf. CBET 2401).  The predicted peak rate was ZHR = 65 meteors/hr (Jenniskens,
2006, *Meteor Showers and their Parent Comets*, p. 657).  These data are
based on roughly ten visual observers located in China, Russia, Japan, and
Israel.
     S. Nakano, Sumoto, Japan, forwards the following visual counts by
Katsuhiko Mameta (Kobe, Hyogo-ken) at Nishi-Harima Observatory on Aug. 12
(limiting mag 6.0-6.3):  15h30m-16h00m UT, 22 Perseids, 10 other meteors;
16h00m-16h50m, 29 Perseids, 17 others; 18h05m-19h00m, 37 Perseids, 17 others.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 August 17                   (CBET 2416)              Daniel W. E. Green