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Buchhave, Mark Trueblood, Matthew Penny, Michael L. Calkins, Patricia Trueblood, Perry Berlind, Rachel Ross, Rachel Street, Richard Pogge, Robert J. Siverd, Roberto Sanchis-Ojeda, Samuel N. Mellon, Thomas E. Oberst, Thomas G. Beatty","submitted_at":"2015-01-22T16:41:29Z","abstract_excerpt":"We report the discovery of KELT-7b, a transiting hot Jupiter with a mass of $1.28 \\pm 0.18$ MJ, radius of $1.53_{-0.047}^{+0.046}$ RJ, and an orbital period of $2.7347749 \\pm 0.0000039$ days. The bright host star (HD33643; KELT-7) is an F-star with $V=8.54$, Teff $=6789_{-49}^{+50}$ K, [Fe/H] $=0.139_{-0.081}^{+0.075}$, and $\\log{g}=4.149 \\pm 0.019$. It has a mass of $1.535_{-0.054}^{+0.066}$ Msun, a radius of $1.732_{-0.045}^{+0.043}$ Rsun, and is the fifth most massive, fifth hottest, and the ninth brightest star known to host a transiting planet. 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