PSR B1257plus12 B

System: PSR B1257+12

Planet orbiting the PSR B1257+12 pulsar, PSR B1257+12 B is an extremely inhospitable environment.

Orbital parameters

The planet is one of three objects known to be orbiting the pulsar PSR B1257+12, which it circles at a distance of 0.36 AU with an orbital period of approximately 66 days. Because planet B and planet C have very similar masses (as well as orbiting close to each other), they cause measurable perturbations in each other's orbits. Accurate masses of the two planets, as well as their inclinations, were measured by calculating how much the planets interfere with each other.