I siriusly recommend the book. It isn’t available on PDF.
Chiron rules (I added a few things):
Medicine and Healing.
Sagittarius, Scorpio and Ophiuchus.
Fatherhood and Male relatives.
Jupiter/Constellation (not sure it's an octave).
Chiron rules (Again, I made additions):
Mentorship and assistants.
Surgery and Hospitals.
Heroes and Role models.
Hands, and all uses of them.
Music (more of a Scorpio, then there's fortune in performances in Sagittarius).
He had a daughter, her constellation, the flying horse Pegasus.
Pegasus with Andromeda (a double constellation like Ophiuchus with Serpens) flies above the southernly zodiac constellations Aquarius and Pisces (including Piscis Austrinus)...
I have to go with Sagittarius.