{"paper":{"title":"Ground-based multisite observations of two transits of HD 80606b","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Cabrera-Lavers, A. R. Rudy, A. Shporer, B. E. Nelson, B. J. Fulton, C. Morley, C. Moutou, C. Vincent, D. Pollaco, D. Starkey, E. Adams, E. B. Ford, E. Roebuck, E. Simpson, F. Bouchy, F. Reyes, G. A. Esquerdo, G. Hebrard, G. Lander, G. Weaver, H. Deeg, J. Fernandez, J. N. Winn, J.-W. Xie, K. Costello, K. D. Colon, L. Coban, L. Nortmann, M. Good, M. Hunt, M. J. Holman, M. Lockhart, P. I. Choi, R. C. Morehead, R. F. Diaz, R. Ruth, S. C. C. Barros, S. Cerutti, S. Dreizler, S. Kadakia, S. W. Fleming, T. Mazeh, W. F. Welsh, W. M. Wood-Vasey","submitted_at":"2010-08-24T20:00:03Z","abstract_excerpt":"We present ground-based optical observations of the September 2009 and January 2010 transits of HD 80606b. Based on 3 partial light curves of the September 2009 event, we derive a midtransit time of T_c [HJD] = 2455099.196 +- 0.026, which is about 1 sigma away from the previously predicted time. We observed the January 2010 event from 9 different locations, with most phases of the transit being observed by at least 3 different teams. We determine a midtransit time of T_c [HJD] = 2455210.6502 +- 0.0064, which is within 1.3 sigma of the time derived from a Spitzer observation of the same event."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.4129","kind":"arxiv","version":2},"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"}