  On December 22, 2020 at about 23h 23m 33s UTC a very bright fireball was seen
in the sky of south-eastern China. The fireball lasted for several seconds and
ended with an atmospheric explosion that was detected by US surveillance
satellites. According to CNEOS's data, the fireball moved with a mean speed of
13.6 km/s and exploded at an altitude of about 35.5 km (Lat. $31.9^{\circ}$ N;
Long. $96.2^{\circ} $ E). In this paper we estimate the atmospheric trajectory,
the heliocentric orbit and the strewn fields for different mass/section ratio
of the fragments. The trajectory was about from north to south and with low
inclination ($5^{\circ} \pm 2^{\circ}$) with respect to the local surface. The
explosion height appear consistent with a fragmented rocky body and the
heliocentric orbit supports an asteroidal origin. The probable strewn field
extend between two points with coordinates ($+31.3^\circ$ N; $96.3^\circ$ E)
and ($+30.3^\circ$ N; $96.5^\circ$ E), for a total area of about 4000
$\textrm{km}^2$. This large extension is a direct consequence of the low
inclination of the trajectory. Given the unknown uncertainty of the CNEOS's
data, these results should be taken with caution.
