  The transient event labeled as TCP J05074264+2447555 recently discovered
towards the Taurus region was quickly recognized to be an ongoing microlensing
event on a source located at distance of only $700-800$ pc from Earth. Here, we
show that observations with high sampling rate close to the time of maximum
magnification revealed features that imply the presence of a binary lens system
with very low mass ratio components. We present a complete description of the
binary lens system which hosts an Earth-like planet with most likely mass of
$9.2\pm 6.6$ M$_{\oplus}$. Furthermore, the source estimated location and
detailed Monte Carlo simulations allowed us to classify the event as due to the
closest lens system, being at a distance of $\simeq 380$ pc and mass $\simeq
0.25$ M$_{\odot}$.
