Table 3
Daily motion of radiant of the real showers associated with comet 2P/Encke selected from the considered databases.
| DB-No. |  |
λmin. | λmax. | Aα | Bα | Aδ | Bδ |
|---|---|---|---|---|---|---|---|
| Part 1 - northern showers | |||||||
| R-N06 | 79.000 | 72.8 | 89.7 | 61.90 ± 0.29 | 0.588 ± 0.061 | 25.43 ± 0.31 | 0.170 ± 0.064 |
| R-N10 | 90.080 | 81.4 | 99.5 | 72.80 ± 0.46 | 0.607 ± 0.093 | 27.30 ± 0.52 | − 0.055 ± 0.104 |
| R-N05 | 93.576 | 83.5 | 102.3 | 73.76 ± 0.54 | 0.584 ± 0.089 | 29.48 ± 0.60 | 0.061 ± 0.099 |
| R-N04 | 179.624 | 165.6 | 187.8 | 15.16 ± 0.32 | 0.542 ± 0.048 | 11.52 ± 0.42 | 0.153 ± 0.065 |
| S-N11 | 188.066 | 174.2 | 197.5 | 21.56 ± 0.21 | 0.560 ± 0.034 | 11.89 ± 0.19 | 0.263 ± 0.031 |
| R-N11 | 219.088 | 209.7 | 230.7 | 53.88 ± 0.54 | 0.734 ± 0.076 | 23.00 ± 0.31 | 0.207 ± 0.043 |
| C-N01 | 227.249 | 199.4 | 250.6 | 56.05 ± 0.05 | 0.761 ± 0.005 | 22.32 ± 0.03 | 0.176 ± 0.004 |
| E-N01 | 227.302 | 200.4 | 254.2 | 56.58 ± 0.04 | 0.770 ± 0.004 | 22.43 ± 0.04 | 0.170 ± 0.003 |
| R-N08 | 229.071 | 220.5 | 235.5 | 60.00 ± 0.38 | 0.559 ± 0.067 | 23.79 ± 0.47 | 0.156 ± 0.083 |
| S-N02 | 229.947 | 217.1 | 243.0 | 58.84 ± 0.03 | 0.736 ± 0.005 | 22.76 ± 0.02 | 0.156 ± 0.004 |
| S-N01 | 231.061 | 197.0 | 264.0 | 59.47 ± 0.04 | 0.770 ± 0.003 | 23.15 ± 0.04 | 0.175 ± 0.003 |
| E-N06 | 243.534 | 237.5 | 249.2 | 69.95 ± 0.06 | 0.798 ± 0.029 | 24.76 ± 0.07 | 0.069 ± 0.032 |
| C-N07 | 244.479 | 240.4 | 250.6 | 70.04 ± 0.09 | 0.708 ± 0.040 | 24.65 ± 0.09 | 0.180 ± 0.038 |
| F-N01 | 258.381 | 250.7 | 265.1 | 55.79 ± 0.86 | 1.988 ± 0.282 | 22.18 ± 0.23 | 0.393 ± 0.077 |
| F-N07 | 259.986 | 256.6 | 263.0 | 86.49 ± 0.53 | 0.280 ± 0.228 | 25.56 ± 0.42 | 0.155 ± 0.181 |
| E-N07 | 260.982 | 256.1 | 268.6 | 90.44 ± 0.18 | 0.765 ± 0.053 | 26.19 ± 0.21 | 0.007 ± 0.063 |
| S-N06 | 263.600 | 251.3 | 274.9 | 92.37 ± 0.12 | 0.762 ± 0.024 | 25.80 ± 0.11 | − 0.012 ± 0.024 |
| C-N05 | 268.394 | 250.7 | 288.1 | 96.64 ± 0.16 | 0.754 ± 0.019 | 26.47 ± 0.15 | − 0.010 ± 0.018 |
| Part 2 - southern showers | |||||||
| R-S11 | 97.530 | 89.8 | 102.4 | 84.50 ± 0.46 | 0.479 ± 0.116 | 20.70 ± 0.43 | − 0.145 ± 0.109 |
| S-S09 | 155.116 | 145.8 | 163.5 | 357.61 ± 0.32 | 0.619 ± 0.067 | − 5.84 ± 0.39 | 0.164 ± 0.083 |
| E-S08 | 161.773 | 156.9 | 168.4 | 3.75 ± 0.27 | 0.567 ± 0.065 | − 3.19 ± 0.28 | 0.307 ± 0.067 |
| E-S07 | 163.531 | 157.3 | 168.3 | 1.07 ± 0.23 | 0.657 ± 0.071 | − 2.36 ± 0.32 | 0.250 ± 0.097 |
| C-S12 | 165.749 | 156.2 | 175.7 | 1.38 ± 0.32 | 0.498 ± 0.054 | − 2.04 ± 0.32 | 0.247 ± 0.054 |
| C-S04 | 204.226 | 190.5 | 217.5 | 38.39 ± 0.05 | 0.656 ± 0.010 | 10.31 ± 0.04 | 0.176 ± 0.008 |
| S-S06 | 205.211 | 201.7 | 208.5 | 41.01 ± 0.09 | 0.640 ± 0.036 | 11.14 ± 0.09 | 0.149 ± 0.038 |
| R-S10 | 210.146 | 201.9 | 217.0 | 45.54 ± 0.24 | 0.423 ± 0.046 | 12.00 ± 0.44 | 0.107 ± 0.084 |
| S-S05 | 210.696 | 206.3 | 214.5 | 44.85 ± 0.09 | 0.662 ± 0.041 | 12.59 ± 0.10 | 0.123 ± 0.043 |
| E-S01 | 213.146 | 178.8 | 242.1 | 45.49 ± 0.04 | 0.719 ± 0.003 | 12.01 ± 0.04 | 0.177 ± 0.003 |
| C-S01 | 214.819 | 175.9 | 245.4 | 46.54 ± 0.05 | 0.716 ± 0.004 | 12.23 ± 0.04 | 0.168 ± 0.003 |
| R-S08 | 218.663 | 204.9 | 233.9 | 54.53 ± 0.50 | 0.676 ± 0.067 | 15.16 ± 0.34 | 0.154 ± 0.047 |
| S-S01 | 220.267 | 196.7 | 240.0 | 51.36 ± 0.03 | 0.712 ± 0.004 | 13.71 ± 0.03 | 0.156 ± 0.003 |
| E-S03 | 249.221 | 229.9 | 267.5 | 78.09 ± 0.11 | 0.765 ± 0.015 | 17.85 ± 0.11 | 0.051 ± 0.016 |
| S-S02 | 249.313 | 230.4 | 271.7 | 77.98 ± 0.07 | 0.753 ± 0.008 | 18.24 ± 0.08 | 0.034 ± 0.010 |
| C-S05 | 251.003 | 232.7 | 271.0 | 79.11 ± 0.10 | 0.756 ± 0.011 | 17.88 ± 0.11 | 0.022 ± 0.012 |
| R-S15 | 255.757 | 248.1 | 263.5 | 92.86 ± 0.59 | 0.673 ± 0.096 | 19.43 ± 0.49 | − 0.190 ± 0.080 |
| F-S01 | 258.567 | 249.0 | 266.7 | 52.05 ± 0.87 | 2.523 ± 0.260 | 13.55 ± 0.18 | 0.461 ± 0.055 |
| E-S05 | 264.663 | 254.0 | 275.7 | 95.84 ± 0.21 | 0.714 ± 0.034 | 17.90 ± 0.26 | − 0.078 ± 0.043 |
| C-S09 | 268.911 | 259.9 | 282.1 | 101.15 ± 0.20 | 0.610 ± 0.045 | 19.21 ± 0.27 | − 0.040 ± 0.059 |
Notes.
Specifically, the letters F, C, S, E, and R stand for the IAU-MDC photographic, video IAU-MDC CAMS, video SonotaCo, video EDMOND, and radio-meteor database (DB), respectively. “No.” is the serial number of shower selected from a given database;
is the mean solar longitude of the shower; λmin.
and λmax.
delimit the period of the shower activity in terms of solar longitude of meteors; and
Aα,
Bα,
Aδ, and
Bδ are the coefficients in Eqs. (17) and (18) used to calculate the corrected radiant of a given meteor. Solar longitudes and coefficients Aα and
Aδ are given in degrees. Coefficients Bα
and Bδ are dimensionless.
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