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Home All issues Volume 506 / No 3 (November II 2009) A&A, 506 3 (2009) 1445-1454 Full HTML
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Table 4:

Radiants and orbital elements (J2000.0) of the 1999, 2001, and 2006 Leonid fireballs with known time of meteor passage.

Meteor 		$\alpha _{\rm G}$ $\delta _{\rm G}$ $V_{\rm G}$ a e q $\omega $ $\Omega $ i $T_{\rm J}$
No. (deg) (deg) (km s-1) (AU)   (AU) (deg) (deg) (deg)  
Year 1999                  
LEO01 $152.82 \pm 0.17$ $23.05 \pm 0.16$ $71.3 \pm 0.3$ 64 0.98 0.9824 170.6 233.38595 161.0 -1.08
LEO02 $153.83 \pm 0.06$ $21.47 \pm 0.05$ $70.36 \pm 0.10$ 8.1 0.878 0.9833 171.36 235.28120 162.75 -0.55
LEO03 $154.6 \pm 0.2$ $21.65 \pm 0.10$ $70.02 \pm 0.08$ 6.8 0.856 0.9804 169.2 235.29096 162.0 -0.43
LEO04 $153.69 \pm 0.04$ $21.68 \pm 0.03$ $70.20 \pm 0.05$ 7.3 0.866 0.98422 172.09 235.29881 162.48 -0.49
LEO05 $153.81 \pm 0.09$ $21.1 \pm 0.3$ $70.44 \pm 0.10$ 8.2 0.881 0.9828 170.9 235.30074 163.4 -0.57
LEO06 $153.3 \pm 0.2$ $22.08 \pm 0.14$ $70.4 \pm 0.3$ 8.7 0.887 0.9861 174.1 235.30116 162.1 -0.60
LEO07 $153.47 \pm 0.12$ $21.6 \pm 0.6$ $70.15 \pm 0.11$ 6.9 0.858 0.9848 172.6 235.31143 162.8 -0.45
LEO08 $153.42 \pm 0.12$ $21.83 \pm 0.05$ $70.26 \pm 0.17$ 7.6 0.871 0.9854 173.2 235.31285 162.42 -0.52
LEO09 $153.65 \pm 0.15$ $21.65 \pm 0.17$ $70.3 \pm 0.2$ 7.6 0.87 0.9844 172.3 235.33041 162.6 -0.51
LEO10 $154.36 \pm 0.06$ $22.7 \pm 0.3$ $69.15 \pm 0.20$ 4.7 0.790 0.9832 171.0 235.332 160.3 -0.07
LEO11 $153.66 \pm 0.08$ $21.57 \pm 0.06$ $70.45 \pm 0.11$ 8.7 0.887 0.9843 172.3 235.33414 162.71 -0.60
LEO12 $153.83 \pm 0.06$ $21.68 \pm 0.02$ $70.14 \pm 0.09$ 7.1 0.861 0.9859 171.79 235.34502 162.38 -0.46
LEO13 $152.6 \pm 0.5$ $22.1 \pm 0.4$ $70.2\pm 0.3$ 7.2 0.86 0.9876 176.2 235.35985 162.5 -0.46
LEO14 $153.70\pm 0.09$ $21.48 \pm 0.13$ $70.02 \pm 0.20$ 6.4 0.847 0.9840 171.9 235.36128 162.8 -0.39
LEO15 $154.9 \pm 0.5$ $21.63\pm 0.15$ $70.41\pm 0.13$ 8.9 0.889 0.9837 171.9 236.25849 161.9 -0.61
LEO16 $154.29 \pm 0.06$ $21.5\pm 0.03$ $71.32 \pm 0.11$ 30 0.967 0.9856 173.91 236.26581 162.53 -1.03
LEO17 $153.98 \pm 0.16$ $21.72 \pm 0.12$ $71.0 \pm 0.3$ 15 0.93 0.9866 175.0 236.29885 162.4 -0.83
Year 2001                  
LEO18 $152.30 \pm 0.03 $ $23.30 \pm 0.04$ $70.18 \pm 0.11$ 8.4 0.883 0.9815 169.55 232.73396 160.68 -0.56
LEO19 $152.54 \pm 0.08$ $23.19 \pm 0.06$ $70.57 \pm 0.12$ 12.0 0.919 0.9807 169.1 232.78574 160.78 -0.76
LEO20 $154.25 \pm 0.15$ $21.82 \pm 0.07$ $70.50 \pm 0.07$ 9.5 0.896 0.9842 172.1 235.71460 161.98 -0.64
LEO21 $153.95 \pm 0.02$ $22.05 \pm 0.02$ $70.32 \pm 0.15$ 8.3 0.881 0.98551 173.44 235.75032 161.77 -0.56
LEO22 $153.47 \pm 0.17$ $21.97 \pm 0.11$ $70.53 \pm 0.11$ 9.4 0.895 0.9867 175.0 235.76569 162.2 -0.64
LEO23 $153.96 \pm 0.05$ $21.72 \pm 0.02$ $70.58 \pm 0.13$ 8.2 0.899 0.9852 173.2 235.77680 162.32 -0.66
LEO24 $155 \pm 1$ $21.73 \pm 0.07$ $69.73 \pm 0.13$ 5.9 0.833 0.980 169 235.77759 161.4 -0.30
LEO25 $152.2 \pm 0.3$ $20.92 \pm 0.12$ $70.38 \pm 0.15$ 7.1 0.861 0.9881 177.5 235.78100 164.6 -0.48
LEO26 $153.91 \pm 0.04$ $22.19 \pm 0.13$ $70.2\pm 0.3$ 7.5 0.87 0.9860 173.96 235.81875 161.5 -0.50
LEO27 $154.05 \pm 0.02$ $21.70 \pm 0.05$ $70.72 \pm 0.12$ 11 0.913 0.9851 173.12 235.83328 162.33 -0.74
LEO28 $154.33 \pm 0.10$ $21.4 \pm 0.2$ $70.4 \pm 0.3$ 8.2 0.88 0.9836 171.6 235.84343 162.6 -0.56
LEO29 $154.13 \pm 0.02$ $21.80 \pm 0.04$ $70.7 \pm 0.4$ 10.7 0.91 0.9851 173.1 235.86862 162.11 -0.72
Year 2006                  
LEO50 $152.751 \pm 0.014$ $22.90 \pm 0.03$ $70.80 \pm 0.06$ 15.1 0.935 0.98230 170.39 233.43156 161.18 -0.85
LEO51 $152.59 \pm 0.13$ $22.47\pm 0.17$ $69.1 \pm 0.5$ 4.5 0.78 0.9819 169.6 233.55075 161.6 -0.02
LEO52 $153.76 \pm 0.05$ $21.82\pm 0.03$ $70.28 \pm 0.05$ 7.8 0.873 0.9846 172.4 235.40783 162.22 -0.52
LEO53 $154.13 \pm 0.07$ $22.90\pm 0.10$ $70.5 \pm 0.2$ 9.8 0.90 0.9844 172.3 235.47881 161.3 -0.66
LEO54 $154.71 \pm 0.05$ $21.37 \pm 0.13$ $70.5 \pm 0.2$ 9.0 0.89 0.9851 173.2 236.60258 162.4 -0.62

( $\alpha _{\rm G}$, $\delta _{\rm G}$) is the geocentric radiant, $V_{\rm G}$ is geocentric mean velocity without atmospheric drag (not mesurable on our records) and $T_{\rm J}$is Tisserand's parameter. Values of individual entries are given with an accuracy of one or two last digits or with one standard deviation.


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