urn:nasa:pds:context:instrument:prop.orex 1.0 1.16.0.0 Product_Context 2021-09-10 1.0 First version of the context product to be archived with the PDS. urn:nasa:pds:context:instrument_host:spacecraft.orex instrument_to_instrument_host 10.1007/s11214-018-0521-6 E.B. Bierhaus, B.C. Clark, J.W. Harris, K.S. Payne, R.D. Dubisher, D.W. Wurts, R.A. Hund, R.M. Kuhns, T.M. Linn, J.L. Wood, A.J. May, J.P. Dworkin, E. Beshore, D.S. Lauretta and the OSIRIS-REx Team, The OSIRIS-REx Touch-and-Go Sample Acquisition Mechanism (TAGSAM) and Flight System, Space Science Reviews, 214:107, 2018. OSIRIS-REx Spacecraft description paper. Propulsion Subsystem Spacecraft Sensor not applicable not applicable Propulsion is provided by a pressurized mono-propellant system based on ultrapure hydrazine. The system includes a main propellant tank, a helium pressurant tank, four 200-N main thrusters for the largest maneuvers, six 22-N thrusters for trajectory corrections, sixteen 4.5-N thrusters for attitude control, and two 0.5-N thrusters for precise maneuvers needed prior to departure from Bennu orbit and for touch-and-go sample acquisition. Thruster activity is recorded for transmission to Earth in the spacecraft engineering data stream.