The second planet in the system was also confirmed with the additional new RV measurements, but the period and orbital parameters of Gliese 317 c were very uncertain (P>2000 days). A stability analysis on this putative system suggest that the pair of gas giant planets are in a 4:1 mean motion resonance. The second planet, remote from its host star, is a good candidate for direct imaging. Revised elements of this companion were presented in 2020, demonstrating this is a Jupiter analog.
