MOA-2020-BLG-208Lb: Cool Sub-Saturn Planet Within Predicted Desert

We analyze the MOA-2020-BLG-208 gravitational microlensing event and present the discovery and characterization of a new planet, MOA-2020-BLG-208Lb, with an estimated sub-Saturn mass. With a mass ratio q = 3.17^{+0.28}_{-0.26} \times 10^{-4} and a separation s = 1.3807^{+0.0018}_{-0.0018}, the planet lies near the peak of the mass-ratio function derived by... Show more