I don't, sorry.
Just in case it may help:
I would note that Patrons are some of the easiest content to homebrew, so there might not be a big market for 3rd party Patrons, and thus not many on offer. Their only complexity has come from the more recent remaster where familiar abilities got more interesting.
I would suggest reflavoring Spinner of Threads. The Occult spell list fits with the interpretive mysticism of astrology, and gets you Nudge Fate which seems appropriate. It also has the good/bad omen thing for the familiar, which is also pretty astrology coded.
If you prefer Arcane for its hard rule and logic based aspects and want to play up Astrology as being a kind of science, I would let you swap out Occult for Arcane in a reflavored Spinner of Threads.
Add in the Oatia Skysage archetype.
They get an astrology lore and Star and Moon domain and thematic abilities.