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Table 1

Values of the Southworth-Hawkins D-discriminant, Dj, between the mean observed and modeled orbits, where j denotes the four assumed filaments of the meteoroid stream of C/1917 F1.

No. D1 D2 D3a D 3b D 4 ⟨ D ⟩ a ⟨ D ⟩ b
4 0.138 0.253 0.206 0.150 0.174 0.193 0.179
3 0.197 0.316 0.126 0.037 0.196 0.209 0.186
17 0.172 0.366 0.179 0.086 0.138 0.213 0.190
8 0.133 0.342 0.257 0.194 0.219 0.237 0.222
Nom. 0.198 0.297 0.159 0.095 0.316 0.242 0.226
18 0.214 0.369 0.242 0.184 0.260 0.271 0.257
14 0.557 0.291 0.169 0.159 0.283 0.325 0.323
13 0.119 0.303 0.129 0.068 9.999 2.638 2.623
12 0.173 0.314 0.187 0.198 9.999 2.668 2.671
6 0.219 0.236 0.234 0.116 9.999 2.672 2.643
10 0.210 0.300 0.185 0.139 9.999 2.674 2.662
7 0.092 0.399 0.212 0.120 9.999 2.675 2.652
15 0.189 0.331 0.185 0.141 9.999 2.676 2.665
16 0.228 0.324 0.212 0.155 9.999 2.691 2.676
1 0.217 0.375 0.181 0.147 9.999 2.693 2.685
11 0.218 0.344 0.215 0.150 9.999 2.694 2.678
22 0.235 0.426 0.245 0.193 9.999 2.726 2.713
2 0.262 0.276 0.401 0.349 9.999 2.734 2.722
9 0.749 0.280 0.171 0.059 9.999 2.800 2.772
19 0.198 9.999 0.132 0.091 9.999 5.082 5.072
20 0.196 9.999 0.136 0.096 9.999 5.082 5.072
21 0.201 9.999 0.158 0.104 9.999 5.089 5.076
24 0.200 9.999 0.159 0.112 9.999 5.089 5.077
23 0.201 9.999 0.173 0.114 9.999 5.093 5.078
5 9.999 0.375 0.136 0.118 9.999 5.127 5.123

Notes. ⟨ D ⟩ a, ⟨ D ⟩ b are the averaged values (D1 + D2 + D3a + D4)/4 and (D1 + D2 + D3b + D4)/4; “No.” refers to the serial number of the clone; “Nom.” indicates the nominal orbit. The data are arranged in increasing order of average discriminant ⟨ D ⟩ a. (An ad hoc value of 9.999 is supplied for Dj in case the clone did not produce the particular filament.)

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