  We present an analysis of high angular resolution images of the microlensing
target MOA-2007-BLG-192 using Keck adaptive optics and the Hubble Space
Telescope. The planetary host star is robustly detected as it separates from
the background source star in nearly all of the Keck and Hubble data. The
amplitude and direction of the lens-source separation allows us to break a
degeneracy related to the microlensing parallax and source radius crossing
time. Thus, we are able to reduce the number of possible solutions by a factor
of ${\sim}2$, demonstrating the power of high angular resolution follow-up
imaging for events with sparse light curve coverage. Following Bennett et al.
2023, we apply constraints from the high resolution imaging on the light curve
modeling to find host star and planet masses of $M_{\textrm{host}} = 0.28 \pm
0.04M_{\odot}$ and $m_p = 12.49^{+65.47}_{-8.03}M_{\oplus}$ at a distance from
Earth of $D_L = 2.16 \pm 0.30\,$kpc. This work illustrates the necessity for
the Nancy Grace Roman Galactic Exoplanet Survey (RGES) to use its own high
resolution imaging to inform light curve modeling for microlensing planets that
the mission discovers.
