  On 18 May 2024, a superbolide traversed the western part of the Iberian
Peninsula, culminating its flight over the Atlantic Ocean and generating
significant media attention. This event was caused by a weak carbonaceous
meteoroid of 1 m, entering the atmosphere at 40.4 km$\,$s$^{-1}$ with an
average slope of 8.5$^\circ$. The luminous phase started at 133 km and ended at
an altitude of 54 km. The meteoroid's heliocentric orbit had an inclination of
16.4$^\circ$, a high eccentricity of 0.952, a semi-major axis of 2.4 au, and a
short perihelion distance of 0.12 au. The superbolide was recorded by multiple
ground-based stations of the Spanish Meteor Network (SPMN) and the European
Space Agency (ESA), as well as by the U.S. Government (USG) sensors from space.
Due to the absence of observable deceleration, we successfully reconciled
satellite radiometric data with a purely dynamic atmospheric flight model,
constraining the meteoroid's mass and coherently fitting its velocity profile.
Our analysis shows a good agreement with the radiant and velocity data reported
by the Center for Near-Earth Object Studies (CNEOS), with a deviation of
0.56$^\circ$ and 0.1 km$\,$s$^{-1}$, respectively. The presence of detached
fragments in the lower part of the luminous trajectory suggests that the
meteoroid was a polymict carbonaceous chondrite, containing higher-strength
macroscopic particles in its interior due to collisional gardening, or a
thermally processed C-type asteroid. The orbital elements indicate that the
most likely source is the Jupiter-Family Comet (JFC) region, aligning with the
SOHO comet family, as its sunskirting orbit is decoupled from Jupiter. This
event provides important information to characterize the disruption mechanism
of near-Sun objects.
