Kerberos is somewhere in the Kuiper belt.
" In July 2020 Amir Siraj and Avi Loeb found that a captured origin for the Oort Cloud in the Sun's birth cluster could address the theoretical tension in explaining the observed ratio of outer Oort cloud to scattered disc objects, and in addition could increase the chances of a captured Planet Nine
 The other four probes currently escaping the Solar System either are already or are predicted to be non-functional when they reach the Oort cloud

