’ s repository of research publications and other research outputs An Eccentric Massive Jupiter Orbiting a Subgiant on a 9 . 5-day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images Journal Item

We report the discovery of TOI-172 b from the Transiting Exoplanet Survey Satellite (TESS) mission, a massive hot Jupiter transiting a slightly evolved G star with a 9.48-day orbital period. This is the first planet to be confirmed from analysis of only the TESS full frame images, because the host star was not chosen as a two-minute cadence target. From a global analysis of the TESS photometry and follow-up observations carried out by the TESS Followup Observing Program Working Group, TOI-172 (TIC 29857954) is a slightly evolved star with an effective temperature of Teff=5645±50K, a mass of Må=1.128 0.061 0.065 + Me, radius of Rå=1.777 0.044 0.047 + Re, a surface gravity of log gå=3.993 0.028 0.027 + , and an age of 7.4 Gyr 1.5 1.6 + . Its planetary companion (TOI-172 b) has a radius of RP=0.965 0.029 0.032 + RJ, a mass of MP=5.42 0.20 0.22 + MJ, and is on an eccentric orbit (e 0.3806 0.0090 0.0093 = + ). TOI-172 b is The Astronomical Journal, 157:191 (13pp), 2019 May https://doi.org/10.3847/1538-3881/ab11d9 © 2019. The American Astronomical Society. All rights reserved. 29 Juan Carlos Torres Fellow. 30 NASA Sagan Fellow. 31 Kavli Fellow. 32 51 Pegasi b Fellow. 33 NASA Hubble Fellow. 34 Bernoulli fellow. 35 Gruber fellow. 36 Pappalardo Fellow.