Planet Maldek.

Phaeton (hypothetical planet) Heinrich Wilhelm Matthäus Olbers, who formulated the planet Phaeton hypothesis For other uses, see Phaeton. Phaeton (or Phaëton, less often Phaethon) is the hypothetical planet posited to have existed between the orbits of Mars and Jupiter whose destruction supposedly led to the formation of the asteroid belt. The hypothetical planet was named for Phaëton, the son of the sun god Helios in Greek mythology, who attempted to drive his father's solar chariot for a day with disastrous results and was ultimately destroyed by Zeus.