Matching of models of Titan with tidal Love numbers

The restrictions on the heat flux, the structure of the water-ice shell, and the composition of the Titan ocean, which are necessary to match the calculated (model) and experimental Love numbers, are considered. Estimates are obtained for model Love numbers and maximum surface heat fluxes for the L/LL chondrite composition of the rock-iron component of Titan, taking into account the radiogenic and tidal energy, as well as the energy of ice crystallization in the ocean due to satellite cooling. The values of the tidal Love numbers k2 of Titan were calculated for various models of the water-ice shell of the satellite, including the outer ice crust (ice Ih ± CO2 clathrates) and the internal ocean of various compositions (pure or sea water, ammonia + dissolved salts solution, aqueous solutions of ammonia and methanol). Titan models with an outer ice crust (ice Ih + 5% CO2 clathrates) and with an internal ocean of low salinity based on ammonia (5% NH3) aqueous solution better than other tested models satisfy the k2 experimental values.