Electronic Telegram No. 5732
Central Bureau for Astronomical Telegrams
Mailing address:  Hoffman Lab 209; Harvard University;
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Prepared using the Tamkin Foundation Computer Network


POSSIBLE METEORS FROM 2023 VN_9 (IAU SHOWER M2026-P1)
     P. Jenniskens, SETI Institute and NASA Ames Research Center; T. Hanke, 
High Energy Stereoscopic System Collaboration and CAMS Namibia (CAMS = 
"Cameras for All-sky Meteor Surveillance" low-light video survey); and J. 
Scott, Global Meteor Network and CAMS New Zealand, report that a compact 
transient meteor shower was detected during 2026 July 13-19 UT (cf. website 
URL http://cams.seti.org/FDL/ for those dates).  CAMS Namibia detected one 
meteor of this shower, while the Global Meteor Network (cf. website URL 
https://globalmeteornetwork.org/), mostly via stations in New Zealand, 
recorded from July 13 onwards, in steps of one day, the following numbers
of shower meteors, spanning the range of solar longitude (equinox J2000.0) 
from 110.5 to 115.6 deg:  1, 3, 0, 17, 12, 5, 0.  During that time, the 
sun-centered ecliptic radiant coordinates (150.9 deg, -21.0 deg, and 
geocentric velocity 14.6 km/s), drifted by -0.79 degree per degree of solar 
longitude, -0.60 degree in latitude, and -0.11 km/s in velocity.  Based on 
the one meteor measured by CAMS Namibia, the geocentric radiant of the shower 
at solar longitude 113.8 deg was at R.A. = 263.7 +/- 0.5 deg, Decl. = -44.4 
+/- 0.6 deg, which is near the star theta Sco; the meteor entered with 
geocentric velocity 15.0 +/- 0.1 km/s, with corresponding orbital elements 
a = 3.37 +/- 0.11 AU, q = 0.891 +/- 0.001 AU, e = 0.735 +/- 0.009, i = 8.54 
+/- 0.23 deg, Peri. = 44.8 +/- 0.4 deg, Node = 293.82 +/- 0.001 deg, and 
longitude of perihelion Pi = 338.6 +/- 0.4 deg.  Global Meteor Network data 
have median elements a = 3.14 +/- 0.29 AU, q = 0.895 +/- 0.006 AU, e = 0.716 
+/- 0.026, i = 8.24 +/- 0.28 deg, Peri. = 44.4 +/- 1.1 deg, Node = 294.0 +/- 
1.1 deg, and Pi = 338.3 +/- 0.5 deg (N = 38).  This shower appears to be 
associated with the Apollo-type object 2023 VN_9, which has absolute magnitude 
H = 21.3 and the Tisserand parameter with respect to Jupiter of an inactive 
Jupiter-family comet:  T_J = 2.67.  The orbital elements are a = 3.23 AU, q = 
0.862 AU, e = 0.733, i = 9.47 deg, Peri. = 55.4 deg, Node = 281.8 deg, and Pi 
= 337.2 deg (cf. URL https://cneos.jpl.nasa.gov).  See also the report at URL
https://www.emeteornews.net/2026/08/18/new-meteor-shower-in-scorpius-m2026-p1/.
     M. Hajdukova writes that the provisional IAU designation M2026-P1 has 
been assigned to this shower by the Meteor Data Center.


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

                         (C) Copyright 2026 CBAT
2026 August 26                   (CBET 5732)              Daniel W. E. Green