GJ 1289

GJ 1289 is a red dwarf star located approximately 27 light-years from the Sun in the constellation Andromeda. It is a single star of spectral class M4.5 V, with about 21% of the Sun's mass. The star hosts at least one confirmed exoplanet, GJ 1289 b, and is fully convective, making it a target for studying planetary formation around low-mass stars. Despite its slow rotation, GJ 1289 exhibits large-scale magnetic field strengths similar to those of faster-rotating M dwarfs, suggesting that the star operates a dynamo process in a regime distinct from more rapidly rotating stars. The star is predominantly poloidal with its magnetic topology varying over time, and their small-scale fields contribute more than 70% of the star's overall magnetic flux.