Gee, why the need to resurrect the continuing disconnect between astronomy & astrology? If we go back 1000 years, we find the two branches considered as one.
The biggest difference as far as I can tell is that astronomers use the heliocentric model & astrologers (mainly) the geocentric. Both are equally valid.
Having said that, I tend to the view that most modern day astrology is "pop psychology" & shouldn't be taken seriously.
Anyway, for those of you who are interested, the following link explains why Ophiuccus is not included as a zodiac sign:
https://marklerner.wordpress.com/201...in-the-zodiac/