[en] We report the lens mass and distance measurements of the nearby microlensing event TCP J05074264+2447555 (Kojima-1). We measure the microlens parallax vector ${\mathit{\pi <!--\; ??\; -->}}_{\mathrm{E}}$ using Spitzer and ground-based light curves with constraints on the direction of lens-source relative proper motion derived from Very Large Telescope Interferometer (VLTI) GRAVITY observations. Combining this ${\mathit{\pi <!--\; ??\; -->}}_{\mathrm{E}}$ determination with the angular Einstein radius ${\mathrm{\theta <!--\; ??\; -->}}_{\mathrm{E}}$ measured by VLTI-GRAVITY observations, we find that the lens is a star with mass $M_{\mathrm{L}}=0.495\pm <!--\; ??\; -->0.063M_{\odot <!--\; ???\; -->}$ at a distance D _L = 429 ± 21 pc. We find that the blended light basically all comes from the lens. The lens-source proper motion is ${\mathrm{\mu <!--\; ??\; -->}}_{\mathrm{r}\mathrm{e}\mathrm{l},\mathrm{h}\mathrm{e}\mathrm{l}}=26.55\pm <!--\; ??\; -->0.36\mathrm{m}\mathrm{a}\mathrm{s}{\mathrm{y}\mathrm{r}}^{-<!--\; ???\; -->1}$, so with currently available adaptive-optics instruments, the lens and source can be resolved in 2021. This is the first microlensing event whose lens mass is unambiguously measured by interferometry + satellite-parallax observations, which opens a new window for mass measurements of isolated objects such as stellar-mass black holes.