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Large-scale exoplanet surveys like the TESS mission are powerful tools fordiscovering large numbers of exoplanet candidates. Single-transit events arecommonplace within the resulting candidate list due to the unavoidablelimitation of observing baseline. These single-transit planets often remainunverified due to their unknown orbital period and consequent difficulty inscheduling follow up observations. In some cases, radial velocity (RV) followup can constrain the period enough to enable a future targeted transitdetection. We present the confirmation of one such planet: TOI-2010 b. Nearlythree years of RV coverage determined the period to a level where a broadwindow search could be undertaken with the Near-Earth Object SurveillanceSatellite (NEOSSat), detecting an additional transit. An additional detectionin a much later TESS sector solidified our final parameter estimation. We findTOI-2010 b to be a Jovian planet ($M_P = 1.29 \ M_{\rm Jup}$, $R_P = 1.05 \R_{\rm Jup}$) on a mildly eccentric orbit ($e = 0.21$) with a period of $P =141.83403$ days. Assuming a simple model with no albedo and perfect heatredistribution, the equilibrium temperature ranges from about 360 K to 450 Kfrom apoastron to periastron. Its wide orbit and bright host star ($V=9.85$)make TOI-2010 b a valuable test-bed for future low-insolation atmosphericanalysis.

the astronomical journal

Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey: III. Recovery  and Confirmation of a Temperate, Mildly Eccentric, Single-Transit Jupiter  Orbiting TOI-2010