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Launched on April 2018, NASA's Transiting Exoplanet Survey Satellite (TESS)has been performing a wide-field survey for exoplanets orbiting stars with agoal of producing a rich database for follow-on studies. Here we presentestimates of the detected exoplanet orbital periods in the 2-minute cadencemode during the TESS mission. For a two-transit detection criterion, theexpected mean value of the most frequently detected orbital period is 5.01 dayswith the most frequently detected range of 2.12 to 11.82 days in the regionwith observation of 27 days. Near the poles where the observational duration is351 days, the expected mean orbital period is 10.93 days with the mostfrequently detected range being from 3.35 to 35.65 days. For one-transit, themost frequently detected orbital period is 8.17 days in the region withobservation of 27 days and 11.25 days near the poles. For the entire TESSmission containing several sectors, we estimate that the mean value of orbitalperiod is 8.47 days for two-transit and 10.09 days for one-transit,respectively. If TESS yields a planet population substantially different fromwhat's predicted here, the underlying planet occurrence rates are likelydifferent between the stellar sample probed by TESS and that by Kepler.

Empirical Predictions for the Period Distribution of Planets to be Discovered by the Transiting Exoplanet Survey Satellite