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The CWW 89 binary system is a member of the $3.0\\pm0.25$ Gyr-old open cluster Ruprecht 147, and is composed of a Sun-like primary and an early M-dwarf secondary separated by a projected distance of 25 AU. CWW 89Ab has a radius of $0.937\\pm0.042$ RJ and a mass of $36.5\\pm0.1$ MJ, and is on a 5.3 day orbit about CWW 89A with a non-zero eccentricity of $e=0.19$ (Curtis et al. 2016). We strongly detect the eclipses of CWW 89Ab in both Spitzer channels as $\\delta_{3.6}=1147\\pm213$ ppm and $\\delta_{4.5"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1807.11500","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-30T18:00:21Z","cross_cats_sorted":[],"title_canon_sha256":"c350b5b16e64dc9a2c70b90cd702b1e767d61b029c5ad153fc0d72c13feb0174","abstract_canon_sha256":"65325274106bf90980031344fd6b6d5535842d770a93381058eb449d229b39e6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:45.945748Z","signature_b64":"31ZgmvP50f/bxupw978S3fGBDIpZZ5iSrjBw6JqFF+K3w5ZhgV8pgv8L4Cb2A6OMXbuyH3torQhAQAdLCby0CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cfce0e847097617d387b83e83c92081d6d9712d3d758e76e3648d48268eb83ea","last_reissued_at":"2026-05-18T00:03:45.945115Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:45.945115Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Significant Over-Luminosity in the Transiting Brown Dwarf CWW 89Ab","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Adam Burrows, Benjamin T. Montet, Caroline V. Morley, James R. A. Davenport, Jason L. Curtis, Thomas G. Beatty","submitted_at":"2018-07-30T18:00:21Z","abstract_excerpt":"We observed eclipses of the transiting brown dwarf CWW 89Ab at 3.6um and 4.5um using Spitzer/IRAC. The CWW 89 binary system is a member of the $3.0\\pm0.25$ Gyr-old open cluster Ruprecht 147, and is composed of a Sun-like primary and an early M-dwarf secondary separated by a projected distance of 25 AU. CWW 89Ab has a radius of $0.937\\pm0.042$ RJ and a mass of $36.5\\pm0.1$ MJ, and is on a 5.3 day orbit about CWW 89A with a non-zero eccentricity of $e=0.19$ (Curtis et al. 2016). 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