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We present updated orbital elements for the Wolf-Rayet (WR) binary WR\,140(HD\,193793; WC7pd + O5.5fc). The new orbital elements were derived usingpreviously published measurements along with {\color{black}160} new radialvelocity measurements across the 2016 periastron passage of WR 140.Additionally, four new measurements of the orbital astrometry were collectedwith the CHARA Array. With these measurements, we derive stellar masses of$M_{\rm WR} = 10.31\pm0.45 M_\odot$ and $M_{\rm O} = 29.27\pm1.14 M_{\odot}$.We also include a discussion of the evolutionary history of this system fromthe Binary Population and Spectral Synthesis (BPASS) model grid to show thatthis WR star likely formed primarily through mass loss in the stellar winds,with only a moderate amount of mass lost or transferred through binaryinteractions.

The orbit and stellar masses of the archetype colliding-wind binary WR 140