Depends how you define "novel" I suppose.
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Just full prose novels published as such: 19
Including eBooks: Add another 2 (Recovery, Ylesia) or even 3 (Boba Fett: A Practical Man)
Including graphic novels: Add another 3 (Invasion Volume 1, Volume 2, Volume 3) or even 4 (Chewbacca)
I agree that magazine/serialized short stories don't count (The Apprentice, Emissary to the Void), but surely the eBooks might.
It was the year of fire… the year of destruction… the year we took back what was ours.
It was the year of rebirth… the year of great sadness… the year of pain… and the year of joy.
It was a new age. It was the end of history. It was the year everything changed.
The year is 2261.
The place: Babylon 5.