urn:nasa:pds:jpl.dsn.mmm:eop 16.0 1.16.0.0 Product_Collection Kahan, Daniel 2026 This collection contains JPL/DSN Earth Orientation Parameter (TRK-2-21) files that can be used to calibrate radio science and other data products. 2026-01-12 16.0 This collection is updated through December 2025 2025-10-09 15.0 This collection is updated through September 2025 2025-07-09 14.0 This collection is updated through June 2025 2025-04-10 13.0 This collection is updated through March 2025 2025-01-12 12.0 This collection is updated through December 2025 2024-10-08 11.0 This collection is updated through September 2024 2024-07-07 10.0 This collection is updated through June 2024 2024-04-04 9.0 This collection is updated through March 2024 2024-01-10 8.0 This collection is updated through December 2023 2023-10-13 7.0 This collection is updated through September 2023 2023-07-10 6.0 This collection is updated through June 2023 2023-04-03 5.0 This collection is updated through March 2023 2023-01-04 4.0 This collection is updated through December 2022 2022-10-10 3.0 This collection is updated through September 2022 2022-07-06 2.0 This collection is updated through June 2022 2021-08-28 1.0 Initial version of the collection, which is expected to accumulate. The initial version contains data and projections covering 1962-01-20 through 2021-10-12. 1962-01-20T00:00:00Z 2026-04-10T23:59:59Z Calibration Derived Geodesy Other Investigation urn:nasa:pds:context:investigation:other_investigation.geodesy collection_to_investigation EOP Analysis Literature Search Analysis leading to an EOP file uses data from very long baseline interferometry of compact radio sources and ranging/Doppler measurements to Earth orbiting satellites to determine the polar motion and nutation of the Earth's rotation axis. The data are collected using dozens of stations fixed to the Earth's surface but which are subject to tidal forces and tectonic motions. Earth Planet urn:nasa:pds:context:target:planet.earth collection_to_target urn:nasa:pds:radiosci.documentation:dsn.trk-2-21:1997-08-04 collection_to_document TRK-2-21 Software Interface Specification for EOP files. urn:nasa:pds:radiosci.documentation:document:folkner.1993 collection_to_document A memo describing the models behind derivation of EOP files and the format and use of an EOP file. urn:nasa:pds:radiosci.documentation:document:moyer.1993 collection_to_document A memo describing frame tie and nutation corrections for the Orbit Determination Program (ODP), the 1993 justification for the EOP. Data This collection contains JPL/DSN Earth Orientation Parameter (TRK-2-21) files that can be used to calibrate radio science and other data products. collection_eop.csv 2026-01-12T11:04:25Z 6612 62764dee792535313b0244317e1ac819 0 PDS DSV 1 114 Line-Feed Comma 2 0 257 Member Status 1 ASCII_String 1 LIDVID_LID 2 ASCII_LIDVID_LID 255 inventory_has_member_product