[Buraksr]

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.”

[yongjik]

I believe they are coming close when viewed from the Earth - that is, the second star (S5) may come directly behind Alpha Centauri. Alpha Centauri is only 1.3 parsecs from us, so it's actually much closer to us than S5.

[tomtom1337]

Thank you! Arcsecond is a 2d measurement! One star is coming within a small distance of the other star when looking at the projected image!