What constellations touch the 9-degree wide Zodiac?
While I can't answer the 9 degrees part, 
http://www.space.com/5417-ecliptic-zodiac-work.html notes, the band of 
the zodiac actually passes through 22 constellations: 

 
In fact, as pointed out by the well-known astronomical calculator, 
Jean Meeus, along with Ophiuchus, there are nine other constellations 
that occasionally can be visited by the Moon and planets: Auriga, the 
Charioteer; Cetus, the Whale; Corvus, the Crow; Crater, the Cup; 
Hydra, the Water Snake; Orion, the Hunter; Pegasus, the Flying Horse; 
Scutum, the Shield; and Sextans, the Sextant.



So in truth, there really aren't twelve zodiacal constellations, but 
twenty-two!