Dust trails created by comet 209P/LINEAR
Trail encounter parameters when Earth reaches stream in 2014

UT - Universal Time unadjusted for topocentric correction
Revs - number of orbits of dust from ejection to 2014
Ep - ejection epoch (year)
Da0 - difference between semi-major axis (a0) of the comet and the particle at ejection. Da0~0.0 => large particles
rE-rD - distance of the dust trail node from Earth's orbit (Earth radius=0.00004AU) (Impact radius=0.00005AU) (trail widths can easily be a few Earth diameters, depending on ejection velocities)
fM - estimate of the along-trail dispersion. For a 1-rev trail, fM= 1.0 but for an unperturbed n-rev trail, fM= 1/n. Negative values indicate that the trail has bent backwards on itself.

Year Mo DaUT Revs Ep Da0 rE-rD fM
2014 05 2406:06 1 2009-0.004-0.00268 1.089
2014 05 2406:05 2 2004-0.002-0.00283 0.505
2014 05 2406:05 3 1999-0.001-0.00288 0.336
2014 05 2406:05 4 1994-0.001-0.00293 0.256
2014 05 2406:03 5 1989-0.001-0.00297 0.210
2014 05 2406:05 6 1984-0.001-0.00301 0.184
2014 05 2406:05 7 1979-0.001-0.00306 0.167
2014 05 2406:03 8 1974-0.001-0.00312 0.157
2014 05 2405:58 9 1969 0.000-0.00316 0.139
Year Mo DaUT Revs Ep Da0 rE-rD fM
2014 05 2405:5210 1964 0.000-0.00319 0.127
2014 05 2405:4811 1959 0.000-0.00323 0.117
2014 05 2405:4512 1954 0.000-0.00326 0.111
2014 05 2405:4213 1949 0.000-0.00336 0.124
2014 05 2405:3914 1944-0.001-0.00349 0.143
2014 05 2405:3515 1939-0.001-0.00369 0.174
2014 05 2405:2316 1934-0.001-0.00410 0.232
2014 05 2404:5617 1929-0.001-0.00502 0.384
2014 05 2402:5818 1924-0.004-0.00903 0.673
2014 05 2409:5719 1919 0.006 0.00735-0.286
Year Mo DaUT Revs Ep Da0 rE-rD fM
2014 05 2408:0020 19140.002 0.00202-0.229
2014 05 2407:2421 19090.001 0.00061-0.149
2014 05 2407:0922 19030.001 0.00005-0.113
2014 05 2407:0123 18980.001-0.00025-0.095
2014 05 2406:5524 18930.001-0.00044-0.082
2014 05 2406:5225 18880.000-0.00057-0.074
2014 05 2406:4826 18830.000-0.00067-0.067
2014 05 2406:4527 18780.000-0.00079-0.050
2014 05 2406:4228 18730.000-0.00086-0.040
2014 05 2406:3929 18680.000-0.00090-0.033
Year Mo DaUT Revs Ep Da0 rE-rD fM
2014 05 2406:3830 18630.000-0.00093-0.029
2014 05 2406:3731 18580.000-0.00095-0.026
2014 05 2406:3732 18530.000-0.00096-0.020
2014 05 2406:3533 18480.000-0.00097-0.021
2014 05 2406:3434 18430.000-0.00097-0.022
2014 05 2406:3435 18380.000-0.00099 -.---
2014 05 2406:3436 18330.000-0.00100 -.---
2014 05 2406:3437 18280.000-0.00101 -.---
2014 05 2406:3438 18230.000-0.00102 -.---
2014 05 2406:3439 18180.000-0.00102 -.---
Year Mo DaUT Revs Ep Da0 rE-rD fM
2014 05 2406:3440 18130.000-0.00101 -.---
2014 05 2406:3441 18080.000-0.00101 -.---
2014 05 2406:3842 18030.000-0.00099-0.017
2014 05 2406:3743 17980.000-0.00096-0.023
2014 05 2406:3944 17930.000-0.00091-0.031
2014 05 2406:4745 17880.000-0.00078-0.054
2014 05 2407:1446 17830.001-0.00043-0.116
2014 05 2407:4747 17780.001 0.00001-0.047
2014 05 2408:0248 17730.001 0.00019 -.---
2014 05 2408:0949 17680.001 0.00030 -.---
2014 05 2408:1450 17630.001 0.00038 -.---
2014 05 2408:1951 17580.001 0.00046 -.---
2014 05 2408:2252 17530.001 0.00054 -.---

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Last Revised: 2014 May 22nd