The journey of Typhon-Echidna as a binary system through the planetary region

R. A. N. Araujo, M. A. Galiazzo, C. Winter +1

Among the current population of the 81 known trans-Neptunian binaries (TNBs), only two are in orbits that cross the orbit of Neptune. These are (42355) Typhon-Echidna and (65489) C…