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Table 4

Improvement of orbit precision by addition of radio data: example of the fireball of October 15, 2018.

Sensor Initial velocity Effective surface / mass ratio
km s−1 m2 kg−1
Video 66.49 ± 0.92 <1.28
Radio+Video 66.09 ± 0.09 0.33 ± 0.14

Notes. First data reduction is based on all optical data. For the radio data, geometric model is first derived from the optical data. Then Doppler data are projected on the straight line of the trajectory, thus improving the speed and deceleration measurements by an order of magnitude.

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