{"paper":{"title":"A Mission to Explore the Pioneer Anomaly","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"A. Brillet, A. Rathke, B. Christophe, B. Dachwald, B. Foulon, B. Kent, B. Mashhoon, C. Erd, C.J. de Matos, C. Kiefer, C. L\\\"ammerzahl, D. Giulini, D. Izzo, E.L. Lau, E. Rasel, E. Samain, F. Bondu, F.W. Hehl, H.-J. Blome, J.C. Grenouilleau, J.D. Anderson, J. Kunz, J.L. Rosales, J. P\\'aramos, M.M. Nieto, O. Bertolami, P. Bouyer, P. Touboul, R. Bingham, R. Foerstner, S.G. Turyshev, S. Reynaud, S. Theil, S.W. Asmar, The Pioneer Explorer Collaboration: H. Dittus, T.J. Sumner, U. Johann, W. Ertmer, W. Seboldt","submitted_at":"2005-06-30T16:37:44Z","abstract_excerpt":"The Pioneer 10 and 11 spacecraft yielded the most precise navigation in deep space to date. These spacecraft had exceptional acceleration sensitivity. However, analysis of their radio-metric tracking data has consistently indicated that at heliocentric distances of $\\sim 20-70$ astronomical units, the orbit determinations indicated the presence of a small, anomalous, Doppler frequency drift. The drift is a blue-shift, uniformly changing with a rate of $\\sim(5.99 \\pm 0.01)\\times 10^{-9}$ Hz/s, which can be interpreted as a constant sunward acceleration of each particular spacecraft of $a_P = (8"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0506139","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/gr-qc/0506139/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}