Electronic Telegram No. 5442
Central Bureau for Astronomical Telegrams
Mailing address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
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Prepared using the Tamkin Foundation Computer Network


METEOR SHOWER OUTBURST WITH RADIANT IN CASSIOPEIA
     P. Jenniskens, SETI Institute and NASA Ames Research Center, and N.
Moskovitz, Lowell Observatory, report the detection of a meteor outburst with
a radiant around R.A. = 20.6 +/- 2.2 deg, Dec. = +73.5 +/- 0.6 deg (equinox
J2000.0), near psi Cas, with associated meteors' geocentric velocities of 46.4
+/- 0.9 km/s (one standard deviation dispersion) on Sept. 4 (cf. website URL
http://cams.seti.org/FDL/ for the date 2024 Sept. 4).  Nine meteors of this
previously unknown shower were triangulated by Lowell Observatory CAMS in
Arizona and 4 meteors by CAMS California; LO-CAMS also participates in the
Global Meteor Network.  The shower was active between solar longitudes 161.88
and 162.14 degrees (equinox J2000.0), apparently centered on 162.104 degrees,
with activity possibly continuing past morning twilight.  The sun-centered
ecliptic radiant is centered around lambda = 258.6 +/- 0.3, beta = +57.2
+/- 0.2 deg (standard errors cited).  Orbital elements are centered around
a = 5.3 +/- 0.4 AU, q = 0.987 +/- 0.001 AU, e = 0.812 +/- 0.018, i = 82.4 +/-
0.3 deg, Peri. = 197.8 +/- 0.5 deg, and Node = 162.07 +/- 0.04 deg (standard
errors given).  The short-duration shower was not detected in other CAMS
networks and has not been previously reported.  There is no known parent body.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2024 CBAT
2024 September 8                 (CBET 5442)              Daniel W. E. Green