Astrometric observations with the Gaia spacecraft might ultimately reveal the full three - dimensional geometry of the system . Ranalli et al . ( 2018 ) predicted that the astrometric signal of π Men b will be detectable with a signal - to - noise ratio higher than 10 by the end of the mission . Indeed , the fit to the existing Gaia data exhibits an excess scatter of 295 µ ( 37σ ) , perhaps a hint of planet - induced motion . Direct imaging might also be fruitful some day , although Zurlo et al . ( 2018 ) have already ruled out any companions with orbital separation 10 - 20 AU and an infrared contrast exceeding 10 −6 , corresponding roughly to 30 Jupiter masses .