Electronic Telegram No. 5535
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)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


NEW METEOR SHOWER M2025-F1 IN PUPPIS
     D. Vida, University of Western Ontario; and D. Segon, Croatian Meteor
Network, report an outburst of meteors with a radiant in Puppis.  One-hundred-
fifty meteors were observed by the Global Meteor Network low-light video
cameras on 2025 Mar. 18-22 (cf. URL https://globalmeteornetwork.org/data/).
The shower was independently observed by cameras in fourteen countries across
the globe (Australia, Belgium, Bulgaria, Brazil, Canada, Germany, France,
Hungary, South Korea, The Netherlands, New Zealand, United Kingdom, United
States, South Africa).  The shower had a median geocentric radiant with
coordinates R.A. = 121.89 deg, Decl. = -37.24 deg, within a circle with a
standard deviation of +/- 1.32 deg (equinox J2000.0).  The radiant drift in
R.A. is -0.35 deg on the sky per degree of solar longitude and -0.81 in Decl.,
both referenced to solar longitude 359.0 deg.  The median sun-centered
ecliptic coordinates were L-L0 = 137.00 deg, Beta = -55.49 deg.  The
geocentric velocity was very low at 15.1 +/- 0.2 km/s.  The orbital elements
are those of a Jupiter-family comet:  q = 0.967 +/- 0.004 AU, e = 0.64 +/-
0.05, i = 19.4 +/- 0.9 deg, Peri. = 22.2 +/- 1.5 deg, Node = 180.3 +/- 1.1 deg
(equinox J2000.0).  All meteors appeared during the solar longitude interval
358.0-2.7 degrees, with no clear peak but a plateau lasting roughly between
359.5-2.0 deg.  A plot of co-added radiant locations for the month of March
2025 (cf. website URL https://tinyurl.com/mrykvte8) shows a faint line of
connected radiants with very weak activity that started as early as two weeks
before the reported activity period, although the small-number statistics make
it difficult to make measurements above the threshold of significance.  The
parent-body search did not return any candidates with Southworth and Hawkins
D criterion values less than 0.1.  The shower received the working designation
M2025-F1 from the IAU Meteor Data Center.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2025 CBAT
2025 April 1                     (CBET 5535)              Daniel W. E. Green