[IAUC] CBET 1938: 20090903 : NEW METEOR SHOWERS RECOGNIZED
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Jue Sep 3 13:33:37 ART 2009
Electronic Telegram No. 1938
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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NEW METEOR SHOWERS RECOGNIZED
P. Brown, D. K. Wong, R. J. Weryk, and P. Wiegert, University of Western
Ontario, have contributed 62 new meteor showers to the IAU Meteor Shower
Working List (cf. CBET 1088), based on 3D-wavelet-transform analysis of five
years of observations by the Canadian Meteor Orbit Radar (Brown et al. 2009,
Icarus, in press). P. Jenniskens, Chair of IAU Commission 22's Task Group on
Meteor Shower Nomenclature, reports that the following showers were added to
the Working List. In the table below, the solar longitude, R.A., and Decl.
are given in degrees for equinox 2000.0; V_g is the geocentric velocity of
the meteoroids at the earth, but outside the earth's gravitational field; and
d_RA and d_Dec are the drifts in the radiant position (in R.A. and Decl.,
respectively) for every advance of one degree of solar longitude. Details
for each shower are given at the IAU Meteor Data Center's website:
http://www.ta3.sk/IAUC22DB/MDC2007/. The list is maintained by T. Jopek,
Poznan University.
Solar
No. Meteor-shower Name long. R.A. Decl. V_g d_RA d_Dec
347 beta Pegasids 36.0 350.5 +27.8 41.0 +0.63 +0.34
348 April rho Cygnids 37.0 324.5 +45.9 41.8 +0.61 +0.36
349 lambda Lyrids 41.0 283.7 +28.5 33.4 +0.72 -0.15
350 May Lacertids 42.0 335.6 +45.3 43.0 +0.61 +0.50
351 Daytime Triangulids 46.0 35.9 +34.1 26.2 0.00 0.00
352 zeta Ophiuchids 47.0 254.8 - 4.4 22.8 +0.74 -0.29
353 sigma Cetids 49.0 39.0 -15.7 35.5 0.00 0.00
354 Daytime delta 53.0 35.3 +33.7 28.4 +1.95 +0.91
Triangulids
355 Daytime xi Cetids 54.0 36.4 + 8.6 16.5 +1.00 +0.30
356 May Vulpeculids 54.0 287.2 +22.5 32.5 +0.66 -0.90
357 phi Pegasids 54.0 358.3 +20.7 30.4 +0.72 -0.01
358 tau Ophiuchids 55.0 369.3 - 6.4 37.0 +0.03 -0.55
359 May zeta Cygnids 60.0 318.2 +29.8 29.2 0.00 0.00
360 psi Pegasids 63.0 1.8 +28.1 30.8 +1.11 +0.70
361 theta Serpentids 65.0 284.0 + 6.0 32.0 +0.77 -0.35
362 June mu Cassiopeiids 74.0 17.5 +53.9 43.6 +0.91 +0.28
363 zeta Eridanids 93.0 50.8 - 4.1 50.9 +0.64 +0.44
364 kappa Cetids 94.0 51.0 + 4.6 29.2 +1.71 +0.95
365 beta Camelopardalids 100.0 59.7 +59.7 42.7 +2.10 +0.03
366 July beta Pegasids 100.0 349.1 +34.4 27.8 0.00 0.00
367 omicron Pegasids 100.0 336.9 +31.2 28.5 0.00 0.00
368 July Andromedids 101.0 36.1 +49.1 34.7 +0.68 +0.96
369 July Taurids 104.0 70.0 + 1.5 39.7 +0.81 +0.16
370 Microscopiids 104.0 320.3 -28.3 38.0 +0.89 +0.29
371 alpha Pegasids 106.0 353.9 +17.8 35.9 0.00 0.00
372 phi Piscids 106.0 20.1 +24.1 62.9 +1.56 +0.36
373 theta Perseids 106.0 41.1 +47.6 53.0 +0.87 -0.07
374 iota Sculptorids 128.0 5.2 -28.1 36.7 +0.23 -0.40
375 August omicron 134.0 66.9 - 8.3 45.0 +1.22 +0.08
Eridanids
376 August Lyncids 135.0 119.8 +55.1 41.7 +1.52 -0.23
377 Daytime Monocerotids 137.0 114.1 - 3.1 37.2 0.00 0.00
378 gamma Eridanids 138.0 61.9 -17.4 56.9 0.00 0.00
379 August Cetids 153.0 7.0 - 5.6 20.2 +1.85 0.00
380 kappa Draconids 158.0 189.4 +73.1 38.0 +0.95 -0.70
381 Daytime pi Leonids 174.0 145.6 + 8.7 41.7 +0.76 -0.34
382 beta Ursae Majorids 184.0 161.2 +56.5 50.3 +1.53 +0.10
383 lambda Draconids 196.0 156.1 +74.7 37.5 +1.29 -0.23
384 October Leporids 203.0 81.6 -13.8 25.5 +1.08 +0.26
385 alpha Ursae Majorids 209.0 174.6 +64.6 35.6 +1.07 -0.55
386 October beta 214.0 66.8 +56.2 47.6 +1.45 +0.30
Camelopardalids
387 October kappa 216.0 182.1 +63.4 37.3 +0.95 -0.47
Draconids
388 chi Taurids 220.0 63.2 +24.7 42.1 +0.96 +0.19
389 omega Eridanids 234.0 73.3 - 5.3 31.8 +0.95 +0.35
390 November theta 237.0 89.0 +34.7 33.8 +1.49 +0.14
Aurigids
391 November delta 241.0 277.7 +68.2 25.5 0.00 0.00
Draconids
392 November i Draconids 241.0 200.1 +64.5 43.0 +0.72 -0.31
393 rho Bootids 242.0 215.7 +31.8 43.0 0.00 0.00
394 alpha Canis Majorids 247.0 100.2 -17.3 42.0 +0.69 +0.44
395 gamma Canis Majorids 257.0 109.8 -11.3 43.6 +0.43 -0.17
396 December theta 261.0 93.0 +36.6 58.9 0.00 0.00
Aurigids
397 nu Geminids 262.0 99.0 +18.1 65.8 0.00 0.00
398 December Canis 266.0 112.3 -14.6 42.8 0.00 0.00
Majorids
399 December Hydrids 266.0 131.5 -11.3 54.5 +0.89 -0.58
400 beta Monocerotids 271.0 100.5 - 8.8 31.0 0.00 0.00
401 beta Sextandids 292.0 160.2 + 1.8 53.2 +1.15 -0.44
402 January Hydrids 292.0 149.7 -22.1 37.9 +1.14 -0.83
403 Canum Venaticids 293.0 203.3 +42.8 52.6 +0.33 -0.30
404 gamma Ursae Minorids 299.0 231.8 +66.8 31.8 +0.70 -0.57
405 mu Hydrids 300.0 154.3 -20.9 39.1 +0.65 +0.76
406 February Comae 324.0 186.2 +29.1 24.2 0.00 0.00
Berenicids
407 October eta Eridanids 201.0 45.8 - 9.8 25.4 0.00 0.00
408 kappa Hydrids 283.0 139.1 -12.9 37.6 0.00 0.00
In a correction to CBET 1142, Jenniskens notes that shower 329 (Daytime kappa
Leonids) is identical to shower 212 and has been removed from the working list.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2009 CBAT
2009 September 3 (CBET 1938) Daniel W. E. Green
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