FM252

Looking at the Restart states from Rev 323 we have the following results for FM252. 

FM252		NoBurn	Plan	OD	Plan-NoBurn	OD-NoBurn	Plan-OD	error	
MMS	Epoch of Plan Apogee	A(km)	A (km)	A (km)	A (km)	A (km)	A (km)		
MMS1	Nov 20 2015 08:05:29.307	42106.707	42109.810	42109.815	3.103	3.108	-0.00427	-0.14%	
MMS2	Nov 20 2015 08:05:28.909	42112.334	42109.813	42109.821	-2.522	-2.514	-0.00814	0.32%	
MMS3	Nov 20 2015 08:05:19.164	42109.879	42109.818	42109.816	-0.061	-0.063	0.00138		
MMS4	Nov 20 2015 08:05:21.932	42111.194	42109.816	42109.810	-1.379	-1.385	0.00600	-0.44%	

Looking at the Restart states from Rev 324 we have the following results for FM252. 
FM252		NoBurn	Plan	OD	Plan-NoBurn	OD-NoBurn	Plan-OD	error	
MMS	Epoch of Plan Apogee	A(km)	A (km)	A (km)	A (km)	A (km)	A (km)		
MMS1	Nov 21 2015 07:58:48.916	42107.117	42110.226	42110.232	3.109	3.115	-0.00627	-0.20%	
MMS2	Nov 21 2015 07:58:48.524	42112.746	42110.228	42110.238	-2.519	-2.508	-0.01082	0.43%	
MMS3	Nov 21 2015 07:58:38.797	42110.290	42110.233	42110.231	-0.057	-0.059	0.00171		
MMS4	Nov 21 2015 07:58:41.559	42111.606	42110.231	42110.230	-1.375	-1.376	0.00128	-0.09%	

The Table below provides the following information:
•	First row for each maneuver: planned maneuver total delta-V values based on the associated DVTABLEs  
•	Second row for each maneuver: associated maneuver planning requirements for 1 orbit predictions for FM252
•	Third row for each maneuver: predicted velocity error at the time of the maneuver computed by differencing the predicted velocity at the maneuver time, starting from the previous perigee for FM252 vs the definitive GEONS state at the time of the maneuver.
The predicted velocity differences at the time of each maneuver are less than the greater of 1% of the delta-V or 2 mm/s for the second maneuver with significant margin.
Maneuver ID	Timespan	DVX (m/s)/ 
Req. (m/s)/
DiffVX(m/s)	DVY (m/s)/
Req. (m/s)/
DiffVY(m/s)	DVZ (m/s)/
Req. (m/s)/
DiffVZ(m/s)	
MMS1_FM252	323/04:18:20--323/04:19:00	-0.338503	-0.306015	-0.330178	
		0.0034	0.003	0.0033	
		0.0002	0.0002	0.0001	
MMS2_FM252	323/05:33:30--323/05:34:00	-0.087958	0.391965	0.063419	
		0.002	0.004	0.002	
		0.0005	0.0004	0.0002	
MMS4_FM252	323/06:48:50--323/06:49:00	-0.058249	0.178723	-0.00774	
		0.002	0.002	0.002	
		0.0002	0.0002	0.0002	

All FM251 and FM252 maneuvers were planned using predicted ephemeris files based on GEONS post-perigee RST vectors @ 2015-319/22:36, one day prior to the CAM, which was held the prior day and final maneuver plans had to be prepared prior to the CAM.  Note that these predictions start 2+ orbits prior to FM251 and 3+ orbits prior to FM252.  A “tweak” was planned for FM252 but decision was made to use the original plan.