KMT-2016-BLG-0212: First KMTNet-Only Discovery of a Substellar Companion

We present the analysis of KMT-2016-BLG-0212, a low flux-variation (I_{flux-var}∼20 mag) microlensing event, whichis in a high-cadence (Γ = 4 {hr}^{-1}) field of the three-telescope Korea Microlensing Telescope Network (KMTNet) survey. The event shows a short anomaly that is incompletely covered due to the brief visibility intervals that characterize the early microlensing season when the anomaly occurred. We show that the data are consistent with two classes of solutions, characterized respectively by low-mass brown-dwarf (q=0.037) and sub-Neptune (q<10^{-4}) companions, respectively. Future high-resolution imaging should easily distinguish between these solutions.}