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In 2004 the extrasolar planet TrES-1 was found to be orbiting this star by the Trans-Atlantic Exoplanet Survey using the transit method. The planet was detected crossing its parent star using a small 4-inch diameter telescope. The discovery was confirmed by the Keck Observatory using the radial velocity method, allowing its mass to be determined .
1^ SIMBAD query result: NAME TrES-1 Parent Star -- Star, Centre de Données astronomiques de Strasbourg, access 2009-04-22
2^ Alonso et al., TrES-1: The Transiting Planet of a Bright K0V Star, The Astrophysical Journal Letters, 2004, vol.613, issue 2, pag. L153–L156, 10.1086/425256