Research Article
Lifetime Estimation of the Upper Stage of GSAT-14 in Geostationary Transfer Orbit
Table 1
Observed and predicted mean apogee altitude for zone A.
| TLE epoch (UTC) | Mean apogee observed (km) | Mean apogee predicted (km) | Error (km) |
| February 13, 2014, 15:24 | 35383.75000 | 35383.56640 | 0.184 | February 14, 2014, 12:08 | 35378.30469 | 35379.12109 | −0.816 | February 15, 2014, 19:12 | 35372.59375 | 35373.03125 | −0.438 | February 16, 2014, 05:33 | 35371.17969 | 35371.17578 | 0.004 | February 17, 2014, 22:59 | 35364.45313 | 35363.92578 | 0.527 | February 18, 2014, 19:41 | 35357.75781 | 35360.13672 | −2.379 | February 19, 2014, 06:02 | 35357.01172 | 35357.91797 | −0.906 | February 20, 2014, 13:05 | 35348.90234 | 35350.23828 | −1.336 |
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