Hyades Member K2-136c: The Smallest Planet in an Open Cluster with a Precisely Measured Mass

Andrew W. Mayo, Courtney D. Dressing, Andrew Vanderburg +39

K2-136 is a late-K dwarf ($0.742\pm 0.039$ M${}_{\odot }$) in the Hyades open cluster with three known, transiting planets and an age of $650\pm 70$ Myr. Analyzing K2 photometry, we found…