@misc{Gold_Roelof_Krimigis_Haggerty_Armstrong_Manweiler_Patterson_2022, title={ACE Electron Proton Alpha Monitor (EPAM) Ephemeris Data, Hourly Averages}, url={https://hpde.io/NASA/NumericalData/ACE/EPAM/Ephemeris/PT1H.html}, DOI={10.48322/BS7X-2T71}, abstractNote={Hourly-averaged ephemeris data for the ACE spacecraft, Earth, and Jupiter. Also included are the orientation of the ACE spin-axis, and a rotation matrix for transforming from HEE cartisian coordinates to RTN coordinates.}, publisher={NASA Space Physics Data Facility}, author={Gold, Robert E. and Roelof, Edmond C. and Krimigis, Stomatios and Haggerty, Dennis and Armstrong, Thomas and Manweiler, Jerry W. and Patterson, J. Douglas}, year={2022} }