A Ground-Based Transit Observation of the Long-Period Extremely Low-Density Planet HIP 41378 f

Juliana García-Mejía, Zoë L. de Beurs, Patrick Tamburo +25

We present a ground-based transit detection of HIP 41378 f, a long-period ($P=542$ days), extremely low-density ($0.09\pm 0.02$ g cm${}^{-3}$) giant exoplanet in a dynamically com…