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Planetary architectures remain unexplored for the vast majority ofexoplanetary systems, even among the closest ones, with potentially hundreds ofplanets still ``hidden" from our knowledge. DYNAMITE is a powerful softwarepackage that can predict the presence and properties of these yet undiscoveredplanets. We have significantly expanded the integrative capabilities ofDYNAMITE, which now allows for (i) planets of unknown inclinations alongsideplanets of known inclinations, (ii) population statistics and modeldistributions for the eccentricity of planetary orbits, and (iii) threedifferent dynamical stability criteria. We demonstrate the new capabilitieswith a study of the HD 219134 exoplanet system consisting of four confirmedplanets and two likely candidates, where five of the likely planets areNeptune-size or below with orbital periods less than 100 days. By integratingthe known data for the HD 219134 planetary system with contextual andstatistical exoplanet population information, we tested different systemarchitecture hypotheses to determine their likely dynamical stability. Ourresults provide support for the planet candidates, and we predict at least twoadditional planets in this system. We also deploy DYNAMITE on analogs of theinner Solar System by excluding Venus or Earth from the input parameters totest DYNAMITE's predictive power. Our analysis finds the system remains stablewhile also recovering the excluded planets, demonstrating the increasingcapability of DYNAMITE to accurately and precisely model the parameters ofadditional planets in multi-planet systems.

the astronomical journal

An Integrative Analysis of the HD 219134 Planetary System and the Inner  Solar System: Extending DYNAMITE with Enhanced Orbital Dynamical Stability  Criteria