Ballistic Coefficient Estimation for Reentry Prediction of Rocket Bodies in Eccentric Orbits Based on TLE Data

Figure 8

Cumulative distributions and 90%-confidence regions of reentry prediction error of 91 objects 30 days before reentry using only an estimate for BC and (a) after OD to estimate state and BC and (b) subsequently reestimate the BC.

(a) Prediction errors using only BC estimate and after OD

(b) Prediction errors using only BC estimate and after OD with subsequent BC reestimation