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

We analyze the MOA-2020-BLG-208 gravitational microlensing event and present discovery characterization of a new planet, MOA-2020-BLG-208Lb, with an estimated sub-Saturn mass. With mass ratio $q = 3.17^{+0.28}_{-0.26} \times 10^{-4}$ separation $s 1.3807^{+0.0018}_{-0.0018}$, planet lies near peak mass-ratio function derived by MOA collaboration (Suzuki et al. 2016), edge expected sample sensitivity. For these estimates we provide results using two law priors: one assuming that all stars have equal planet-hosting probability, other planets are more likely to orbit around massive stars. In first scenario, estimate lens system is be $m_\mathrm{planet} 46^{+42}_{-24} \; M_\oplus$ host star $M_\mathrm{host} 0.43^{+0.39}_{-0.23} M_\odot$, located at distance $D_L 7.49^{+0.99}_{-1.13} \mathrm{kpc}$. second 69^{+37}_{-34} M_\oplus$, 0.66^{+0.35}_{-0.32} 7.81^{+0.93}_{-0.93} As cool sub-Saturn-mass this adds growing collection evidence for revised planetary formation models qualifies inclusion in extended MOA-II exoplanet sample.