It is over twice as massive as Jupiter. Since the inclination of the orbit to the line-of-sight was initially unknown, only a lower bound on the planet's mass could be determined. In 2023, the inclination and true mass of Rho Indi b were determined via astrometry.
It is more than double in size compared to Jupiter. Initially, due to uncertainty about the inclination of its orbit relative to our line-of-sight, only an upper limit on the planet's mass could be established. In 2023, the inclination and actual mass of Rho Indi b were determined through precise astrometry.