Pluto's System: first scheme of the possible orbits

Hubble reveals two previously undetected satellites likely orbiting Pluto in the same plane as Pluto's moon, Charon. The two objects are estimated to have diameters between 30/40 and 100/125 miles (such as from about 48/64 and 160/200 Km) and both orbit roughly 27.000 miles (about 43.000 Km) from Pluto.