Distribution of planet mass vs. orbital separation of confirmed exoplanets as listed on exopolanet.eu (January 2022, Schneider et al. 2011). Labelled on top are the corresponding orbital periods for M_* = 1 M_⊙ and M_p << M_*. The main detection methods are marked by different colours. Solar System planets are represented by cyan circles and red letters. The horizontal dashed line marks the approximate deuterium burning mass limit. The solid yellow-shaded area marks the parameter space probed by our high-cadence RVSPY survey, assuming a conservative mean 3σ-sensitivity of 60 m s−1 (Sect. 6.2) and a mean stellar mass of 1 M₀. The yellow-hatched area marks the extended detection space probed by our RVSPY survey assuming a long-term monitoring duration of 5 yr. The grey-shaded area marks the parameter space probed by the NACO-ISPY survey (10% detection probability, Launhardt et al. 2020). The light-grey dashed line marks the approximate detection threshold of current-day exoplanet searches.