An object seen to have moved in the time between when it was imaged by the IRAS and AKARI surveys in 1983 and 2006 respectively could be Planet Nine.

Evidence of controversial Planet 9 uncovered in sky surveys taken 23 years apart

Source: space
Source Link: https://www.space.com/astronomy/solar-system/evidence-of-controversial-planet-9-uncovered-in-sky-surveys-taken-23-years-apart