Electronic Telegram No. 4144
Central Bureau for Astronomical Telegrams
Mailing address:  Hoffman Lab 209; Harvard University;
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e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
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Prepared using the Tamkin Foundation Computer Network


NEW CHI CYGNIDS METEOR SHOWER
     P. Jenniskens, SETI Institute, reports the detection of an outburst from
a new Jupiter-family comet shower, the chi Cygnids (given IAU number 757 and
abbreviation CCY).  Martin Breukers and Carl Johannink first noticed five
nearly identical orbits in multi-station video observations of the CAMS
BeNeLux network in the observing interval Sept. 14d19h23m-15d03h35m UT.
Partial results from the CAMS California network add four meteors in the
observing interval Sept. 15d03h10m-15d12h45m.  The nine meteors detected
appeared between Sept. 14d21h and 15d11h UT (solar longitude 171.54-172.08
deg).  The geocentric radiant is at R.A. = 301.0 +/- 2.2 deg, Decl. =
+32.6 +/- 1.6 deg (equinox 2000.0), with velocity v_g = 15.1 +/- 0.9 km/s.
The median orbital elements are (N = 9):  q = 0.949 +/- 0.003 AU, a = 2.75
+/- 0.40 AU, e = 0.655 +/- 0.041, i = 18.6 +/- 1.6 deg, Peri. = 209.9 +/-
1.9 deg, Node = 171.64 +/- 0.23 deg (equinox 2000.0).
     Confirmation of the outburst was found in the near-real time CMOR radar
observations (P. Brown et al., University of Western Ontario), which are
posted at website URL http://fireballs.ndc.nasa.gov/cmor-radiants/.  The
24-hr averaged maps showed a small concentration of radiants at this
position during the observing period 15d05h15m-15d20h15m UT.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2015 CBAT
2015 September 17                (CBET 4144)              Daniel W. E. Green