On the Location of the Compact Infrared Source in Cyg X-3

This note complements the article on X-ray and infrared variability of the X-ray binary Cyg X-3 (WR+c), published by me and my co-authors. In that paper, a compact infrared (IR) source was discovered in the system, located in the vicinity of the X-ray source associated with the relativistic companion. In the current note I refine the possible location of the IR source based on simple qualitative considerations.