Electronic Telegram No. 2513
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


ORIONID METEORS 2010
     P. Jenniskens, SETI Institute, reports that the Orionid shower has
elevated rates of bright meteors, as predicted by M. Sato and J.-I. Watanabe
(cf. CBET 2507).  Preliminary visual counts collected by the International
Meteor Organization give a Zenith Hourly Rate ZHR 34+/-4 on Oct 21.0 UT,
well above the normal peak rate of 20.  J. M. Trigo-Rodriguez (Inst. Space
Sciences-CSIC), J. M. Madiedo (Univ. Huelva), P. Pujols (Agrup. Astronomica
Osona), J. A. de los Reyes (Murta Observatory), J. Alonso-Azcarate (Univ.
Castilla La Mancha) and J. Zamorano (Univ. Complutense Madrid) report that
their video stations operating in the framework of the Spanish Fireball
Network have detected high activity of Orionid meteors on Oct. 21.1 with ZHR
30+/-6 (chi = 2.0, N= 40, m < +4).  Bright orionids were detected also
during Oct. 22.04-22.21 UT.  This elevated activity is expected to continue
for one or more days.



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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 October 23                  (CBET 2513)              Brian G. Marsden