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C. Schneider (8), A. Meisner (7), A. S. Bans (9), D. C. Bardalez Gagliuffi (4), H. A. Durantini Luca (12, J. Gagn\\'e (6), J. H. Debes (10), J. Holden (12), J. K. Faherty (4), J. P. Wisniewski (1), K. D. Lawson (1), M. C. Schutte (1), M. Hyogo (12, M. J. Kuchner (2), M. K. D. Bosch (12), N. Kovacevic (11), R. Kiman (4, S. M. Silverberg (3)","submitted_at":"2020-07-30T20:50:20Z","abstract_excerpt":"We report the discovery of the youngest brown dwarf with a disk at 102 pc from the Sun, WISEA~J120037.79-784508.3 (W1200-7845), via the Disk Detective citizen science project. We establish that W1200-7845 is located in the 3.7$\\substack{+4.6 \\\\ -1.4}$ Myr-old $\\varepsilon$~Cha association. Its spectral energy distribution (SED) exhibits clear evidence of an infrared (IR) excess, indicative of the presence of a warm circumstellar disk. 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