This planet has a minimum mass 55% that of Jupiter and takes 0.85 years to orbit the star at a semimajor axis of 0.882 AU.
In 2022, a second super-Jovian planet was discovered orbiting HD 43197 using a combination of radial velocity and astrometry.
Assuming HD 43197 b shares the outer planet's orbital inclination, its true mass would be about 4 MJ.
The name was selected in the NameExoWorlds campaign by Nigeria, during the 100th anniversary of the IAU.
Olaudah Equiano was a writer and abolitionist from Ihiala, Nigeria who fought injustice and for the elimination of the slave trade.