An mK = 7.8 star may enter the Einstein ring of alpha Cen A in 2028 (2016)

I could be reading this wrong but it looks like the star is likely to come close, and the uncertainty is such that they may even collide.

“ An exceptional event will take place in early May 2028, when alpha Cen A will come within 0.015 +/- 0.135 arcseconds of the mK = 7.8 star 2MASS 14392160-6049528 (hereafter S5). In terms of impact parameter and contrast, this is the most favorable stellar conjunction of alpha Cen within at least the next three decades. With an angular diameter of LD = 0.47 +/- 0.05 mas, it is likely that S5 is a red giant or supergiant located at several kiloparsecs.”

> The proper motion, orbital parameters and parallax of alpha Cen will be measurable with an extreme accuracy from differential astrometry with the S stars. This will be valuable, for example to prepare the Breakthrough Starshot initiative to send interstellar nanocrafts to alpha Centauri.

I’ve never heard of the Breakthrough Starshot initiative. Can someone here please point me to some more details about this?