User:Kepler-1229b/sandbox/PSR 1257+12 D

PSR B1257+12 D is a possible extrasolar dwarf planet approximately 980 light-years away in the constellation of Virgo. It is suspected that a dwarf planet is orbiting PSR B1257+12 at an average orbital distance of 2.6 AU with an orbital period of approximately 3.5 years.

Originally, in 1996, a possible Saturn-like (100 Earth mass) gas giant was announced orbiting the pulsar at a distance of about 40 AU. However, the discovery was not conclusive and was later retracted. It is now thought that the signal came from a dwarf planetary body.

The object is thought to be very small, less than 20% of the mass of Pluto.