Known non-transiting planetary systems in LOPS2 (orthographic projection in galactic coordinates). Left panel: entries from the ExoMerCat database (Section 3.4): planets discovered through RVs (red diamonds), direct imaging (yellow circles), astrometry (gray circle), and ETV (green circle). The location of the candidate TTV system WASP-126 is also marked with a magenta point. Right panel: candidate astrometric planets published by the Gaia collaboration (purple circles). Each data point is labelled with its ASOI ID number.