Lifetime Estimation of the Upper Stage of GSAT-14 in Geostationary Transfer Orbit

Table 6

Computed values of initial osculating eccentricity and ballistic coefficient and reentry time for each zone using RSM with GA.

Zone label	TLEs considered (UTC)		Computed values		Predicted reentry time (mm-dd-yyyy)	Time interval^a (days)
	From	To	Initial osculating eccentricity ()	Initial ballistic coefficient ()
A	February 13, 2014, 15:24	February 20, 2014, 13:05	0.72796	84.4065933	June 1, 2014	147
B	March 2, 2014, 10:45	March 7, 2014, 04:11	0.72789621	85.8965302	June 1, 2014	147
C	March 10, 2014, 14:32	March 17, 2014, 21:07	0.72761744	81.6301346	June 2, 2014	148
D	March 24, 2014, 06:31	March 31, 2014, 01:15	0.72680628	76.4813202	May 29, 2014	144

Time interval is the number of days between the predicted reentry time and the first TLE epoch of zone A.