{"paper":{"title":"Gaia Data Release 2: Catalogue validation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"A. Bragaglia, A. C. Robin, A. Helmi, A. Moitinho, A. Spagna, A. Vallenari, C. Babusiaux, C. Barache, C. Fabricius, C. Jordi, C. Reyl\\'e, C. Soubiran, C. Turon, C. Zurbach, D. Bossini, D. Massari, E. Pancino, F. Arenou, F. Spoto, G. Jasniewicz, I-C. Shih, J. Veljanoski, L. Eyer, L. Ruiz-Dern, M. A. Breddels, M. Fabrizio, M. Romero-G\\'omez, N. Leclerc, N. Robichon, P. Di Matteo, P.M. Marrese, P. Tanga, R. Sordo, S. Lambert, S. Soria, T. Antoja, T. Cantat-Gaudin, T. Muraveva, X. Luri","submitted_at":"2018-04-25T06:25:25Z","abstract_excerpt":"The second Gaia data release (DR2), contains very precise astrometric and photometric properties for more than one billion sources, astrophysical parameters for dozens of millions, radial velocities for millions, variability information for half a million of stellar sources and orbits for thousands of solar system objects. Before the Catalogue publication, these data have undergone dedicated validation processes. The goal of this paper is to describe the validation results in terms of completeness, accuracy and precision of the various Gaia DR2 data. The validation processes include a systemat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.09375","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":""},"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"}