GAMMA CRUCIDS 2021
P. Jenniskens, SETI Institute and NASA Ames Research Center, reports a meteor
outburst, possibly ongoing, from a previously unknown shower now called the gamma
Crucids (code GCR and IAU shower number 1047). The shower was detected in
observations of the CAMS Australia (M. Towner), CAMS Chile (S. Heathcote and E.
Jehin), and CAMS New Zealand (J. Baggaley) low-light video camera networks. The
meteors radiated from a geocentric radiant at R.A. = 190.6 +/- 3.2, Decl. = -55.9
+/- 1.6 deg, with speed Vg = 55.5 +/- 1.7 km/s. The first shower meteors were
triangulated on 2021 February 11 at 13h UTC (322.7 degrees solar longitude, Equinox
J2000). The most recently analyzed meteor occurred on 2021 February 13 at 12h UTC.
26 meteors give the steeply inclined Hally-type comet median orbital elements and
1-sigma dispersions of: a ~ 14 AU, q = 0.924 +/- 0.024 AU, e = 0.942 +/- 0.110, i =
100.1 +/- 2.3 deg, Peri. = 29.6 +/- 6.1 deg, and Node = 143.9 +/- 0.6 deg (c.f.
http://cams.seti.org/FDL/ for the dates of 2021 February 12–13).
Телеграмма в CBET появилась после того как я сообщил о новом потоке P. Jenniskens.
