The 2° gap between Fomalhaut A (the main, bright star) and B is nothing to sniff at -- most double stars are much closer.
But that's chump change compared to the 11 full moons (5.7°) of sky between Fomalhaut and its newly recognized second companion.
Fomalhaut C is about magnitude 12.6.
A member of one of the widest, if not
the widest (known) multiple star system in the sky, Fomalhaut C's true 3D separation is 2.5 light-years from Fomalhaut and 3.2 light-years from Fomalhaut B.
http://www.skyandtelescope.com/astro...&rid=246721721