TO: Lockheed Martin and SPOC Personnel for OSIRIS-REx SUBJECT: NAV DELIVERY OF REFERENCE TRAJECTORY FILE FOR OSIRIS-REX S/C #64 ******************************************************************************************** THE SPICE BINARY FILE IS LOCATED ON THE FOB IN THE FOLLOWING DIRECTORY: ORXFOB/FDS/SPK orx_171006_190608_180125_od030-R-DSM2-P-M28D_v1.bsp ******************************************************************************************** BRIEF -- Version 4.0.0, September 8, 2010 -- Toolkit Version N0066 Summary for: orx_171006_190608_180125_od030-R-DSM2-P-M28D_v1.bsp Body: OSIRIS-REX (-64) Start of Interval (ET) End of Interval (ET) ----------------------------- ----------------------------- 2017 OCT 06 00:00:00.000 2019 JUN 08 17:00:00.000 Tracking data span used in this solution: Data Start: 23-SEP-2017 12:00:53 ET Data End: 25-JAN-2018 19:09:23 ET Comments: The delivered trajectory file contains an updated reference trajectory associated with Mission Plan Rev B. The file contains a re-optimized outbound cruise trajectory with DSM-2 on June 28, 2018. The trajectory continues through the end of the Detailed Survey mission phase, ending at the completion of the final Detailed Survey Equatorial Station observation leg. Due to the fact that spacecraft states near Bennu are in reference to the asteroid, the nominal Bennu ephemeris is also contained within this file, so a separate file does not need to be loaded in order to utilize this file. This trajectory was based on the spacecraft orbit solution OD030 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 file can be found on zion at: /nav/orex/deliveries/traj/reftraj/ BRIEF -- Version 3.0.0, January 14, 2008 -- Toolkit Version N0064 Summary for: orx_171006_190608_180125_od030-R-DSM2-P-M28D_v1.bsp Bodies Start of Interval (ET) End of Interval (ET) ------- ----------------------------- ----------------------------- -64 2017 OCT 06 00:00:00.000 2019 JUN 08 17:00:00.000 2101955 Same coverage as previous object