Collaborators discover first directly-imaged companion targetted because of its GAIA-Hipparcos astrometric signal.
The paper is published in Science here , and you can check out some of the press here
I contributed models with silicate clouds and disequilibrium chemistry to aid in efforts to infer the mass of the companion and helped assess whether HIP 99770 b would be a suitable target for the Roman-CGI NASA technology demonstration.