{"paper":{"title":"$\\pi$ Earth: a 3.14-day Earth-sized Planet from $\\textit{K2}$'s Kitchen Served Warm by the SPECULOOS Team","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Amaury H.M.J. Triaud, Andrew W. Howard, Artem Burdanov, Benjamin J. Fulton, Benjamin V. Rackham, Brice-Olivier Demory, Catriona Murray, Corey Beard, Daniel Sebastian, Didier Queloz, Elsa Ducrot, Emmanuel Jehin, Francisco J. Pozuelos, Howard Issacson, Ian J. M. Crossfield, Julien de Wit, Laetitia Delrez, Lalitha Sairam, Lionel J. Garcia, Maximilian N. Gunther, Michael Gillon, Peter P. Pedersen, Prajwal Niraula, Rafael Rebolo-Lopez, Roi Alonso, Samantha Thompson, Valerie van Grootel, Yilen Gomez Maqueo Chew","submitted_at":"2020-06-12T16:45:42Z","abstract_excerpt":"We report on the discovery of a transiting Earth-sized (0.95$R_\\oplus$) planet around an M3.5 dwarf star at 57$\\,$pc, K2-315b. The planet has a period of $\\sim$3.14 days, i.e. ${\\sim}\\pi$, with an instellation of 7.45$\\,$S$_{\\oplus}$. The detection was made using publicly available data from $\\textit{K2}$'s Campaign 15. We observed three additional transits with SPECULOOS Southern and Northern Observatories, and a stellar spectrum from Keck/HIRES, which allowed us to validate the planetary nature of the signal. The confirmed planet is well suited for comparative terrestrial exoplanetology. Whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.07308","kind":"arxiv","version":3},"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/2006.07308/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"}