{"paper":{"title":"The Apparently Decaying Orbit of WASP-12","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Drake Deming, Fei Dai, Joshua N. Winn, Kishore C. Patra, Liang Yu, Matthew J. Holman","submitted_at":"2017-03-20T03:42:03Z","abstract_excerpt":"We present new transit and occultation times for the hot Jupiter WASP-12b. The data are compatible with a constant period derivative: $\\dot{P}=-29 \\pm 3$ ms yr$^{-1}$ and $P/\\dot{P}= 3.2$ Myr. However, it is difficult to tell whether we have observed orbital decay, or a portion of a 14-year apsidal precession cycle. If interpreted as decay, the star's tidal quality parameter $Q_\\star$ is about $2\\times 10^5$. If interpreted as precession, the planet's Love number is $0.44\\pm 0.10$. Orbital decay appears to be the more parsimonious model: it is favored by $\\Delta\\chi^2=5.5$ despite having two f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.06582","kind":"arxiv","version":4},"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"}