OGLE/KMTNet light curve for OGLE-2019-BLG-1180

The event OGLE-2019-BLG-1180 has unambiguous cusp-passing and caustic-crossing anomalies, which were caused by a wide planetary caustic with s~2, where s is the star-planet separation in units of the angular Einstein radius {Teta}_E_. Thanks to well-covered anomalies by the Korea Micorolensing Telescope Network (KMTNet), we measure both the angular Einstein radius and the microlens parallax in spite of a relatively short event timescale of t_E_=28 days.

However, because of a weak constraint on the parallax, we conduct a Bayesian analysis to estimate the physical lens parameters. We find that the lens system is a super-Jupiter-mass planet of M_p_=1.75_-0.51_^+0.53^M_J_ orbiting a late-type star of M_h_=0.55_-0.26_^+0.27^M{sun} at a distance D_L_=6.1_-1.3_^+0.9^kpc. The projected star-planet separation is a{perp}=5.19_-1.23_^+0.90^au, which means that the planet orbits at about four times the snow line of the host star.