FR189

Looking at the Restart states from Rev 190 we have the following results for FR189. Results from the Rev 191 Restarts states give similar results.

FR189		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 (m)		
MMS1	Sep 18 2015 14:59:49.530	42111.292	42111.250	42111.249	-0.042	-0.043	0.00069		
MMS2	Sep 18 2015 15:00:00.607	42094.686	42111.216	42111.200	16.530	16.514	0.01601	0.10%	
MMS3	Sep 18 2015 14:59:47.101	42138.779	42111.260	42111.244	-27.519	-27.535	0.01585	-0.06%	
MMS4	Sep 18 2015 15:00:31.326	42074.100	42111.227	42111.126	37.127	37.027	0.10056	0.27%	

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 final maneuver planning requirements 
•	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 with the post-perigee GEONS state prior to the maneuver) vs the definitive GEONS state at the time of the maneuver.
The predicted velocity meets all requirements 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)	
MMS3_FR189	260/13:55:10- 260/14:04:00	1.865915	4.904436	4.160595	
		0.018	0.049	0.041	
		0.001	0.001	0.001	
MMS2_FR189	260/17:04:20- 260/17:14:00	1.508909	-1.876625	-4.306319	
		0.015	0.018	0.043	
		0.003	0.001	0.001	
MMS4_FR189	260/18:25:20–
260/18:39:00	5.884278	-6.789369	-5.183686	
		0.058	0.067	0.051	
		<0.002	0.003	0.003	

All FR188 and FR189 maneuvers were planned using predicted ephemeris files based on GEONS post-perigee RST vectors @ 2015-257/05:21.  Note that these predictions start 2+ orbits prior to FR188 and 3+ orbits prior to FR189 because the FR188 maneuvers started only a couple of hours post-perigee,  CAM was held the prior day, and final maneuver plans had to be prepared prior to the CAM. A “tweak” was planned for FR189 but decision was made to use the original plan.