[IAUC] CBET 2357: 20100708 : 2010 JUNE BOOTID METEORS

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                                                  Electronic Telegram No. 2357
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
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2010 JUNE BOOTID METEORS
     P. Jenniskens, SETI Institute, reports that elevated rates of the June
Bootid meteors (IAU Shower 170) were predicted for 2010 June 23-24 in
calculations by J. Vaubaillon and P. Jenniskens (Jenniskens 2006, *Meteor
Showers and Their Parent Comets*, Cambridge University Press, p. 674), when
the earth was calculated to cross the 1836, 1830, 1825, and 1819 dust ejecta
of comet 7P/Pons-Winnecke at June 23d22h40m, 24d00h07m, 24d01h22m, and
24d03h53m UTC, respectively.  A 94-percent-lit moon in Sco made for poor
observing conditions.  Subsequently, several observers have reported
significant June Bootid activity in low-light-level video observations,
lasting from about June 23d22h until June 24d06h UT.  Rates peaked at a
zenith hourly rate of 5 +/- 2 meteors/hr.  Javor Kac, Slovenia, observed
nine June Bootids and eight sporadic meteors in five hours of observing time
during June 23.9-24.1.  That same night, Enrico Stomeo, Italy, recorded
fifteen June Bootids among 97 meteors total with three cameras (stellar
limiting magnitude 3.8) during 6.2, 5.1, and 6.2 hours of observing,
respectively; video magnitudes were in the range -1.4 to +2.6.  Michel
Vandeputte observed visually from Frasnes, Belgium, and detected three June
Bootids during June 23d23h45m-24d01h20m UT.  Paul Martsching at McFarland
Park, IA, USA, saw five June Bootids and seven sporadic meteors under moonlit
skies between June 24d03h15m and 05h45m UT (stellar limiting magitude 4.9).


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2010 July 8                      (CBET 2357)              Daniel W. E. Green