TO: OSIRIS-REx Operations Personnel SUBJECT: NAV DELIVERY OF PRELIM MPF FOR OSIRIS-REx PTO4 ******************************************************************************************** THE MPF IS LOCATED ON THE FOB IN THE FOLLOWING DIRECTORY: ORXFOB/FDS/MPF orx_mpf_pto4_prelim_od302_v1.xml THE SPICE BINARY FILE IS LOCATED ON THE FOB IN THE FOLLOWING DIRECTORY: ORXFOB/FDS/SPK orx_210101_210330_210310_od302-N-PTO3-P-PTO4_v1.bsp ******************************************************************************************** BRIEF -- Version 4.0.0, September 8, 2010 -- Toolkit Version N0066 Summary for: orx_210101_210330_210310_od302-N-PTO3-P-PTO4_v1.bsp Body: OSIRIS-REX (-64) Start of Interval (ET) End of Interval (ET) ----------------------------- ----------------------------- 2021 JAN 01 00:00:00.000 2021 MAR 30 17:00:00.000 Body: BENNU (2101955) Start of Interval (ET) End of Interval (ET) ----------------------------- ----------------------------- 2015 JAN 01 00:00:00.000 2023 JAN 07 00:00:00.000 Tracking data span used in this solution: Data Start: 20-OCT-2020 23:35:15 Data End: 10-MAR-2021 14:19:07 Burn Time: 27-MAR-2021 20:00:00.0000 UTC DeltaV: 25.65 cm/s Comments: The delivered MPF contains the prelim design of the PTO4 maneuver. The delivered trajectory file contains PTO4 in the trajectory propagation. The maneuver design was based on the spacecraft orbit solution OD302 and planetary ephemeris file DE424. If you have any questions about this delivery, please don't hesitate to contact me via email and/or phone call. Internal Accounting: The delivered files can be found on zion at: /nav/orex/deliveries/mnvr/pto4/prelim BRIEF -- Version 3.0.0, January 14, 2008 -- Toolkit Version N0064 Summary for: orx_210101_210330_210310_od302-N-PTO3-P-PTO4_v1.bsp Bodies Start of Interval (ET) End of Interval (ET) ------- ----------------------------- ----------------------------- -64 2021 JAN 01 00:00:00.000 2021 MAR 30 17:00:00.000 2101955 2015 JAN 01 00:00:00.000 2023 JAN 07 00:00:00.000