  We have studied electron-induced ion-pair dissociation dynamics of CO using
the state-of-art velocity map imaging technique in combination with a
time-of-flight-based two-field mass spectrometer. Extracting the
characteristics for O$^-$/CO nascent atomic anionic fragments from the low
energy (25 - 45 eV) electron-molecule scattering, first-time, we have directly
detected the existence of S-wave resonated Trilobite resembling a novel
molecular binding energy mechanism, as predicted by Greene \textit{et al.}
\cite{greene2000creation}. The energy balance demands ion-pair dissociation
(IPD) lie within a long-range (<1000 Bohr radius) heavy Rydberg system.
Modified Van Brunt expression capturing the deflection of dipole-Born
approximation is used to model the angular distributions (AD) for the anionic
atomic fragments. The AD fits reveal that the final states are dominantly
associated with $\Sigma$ symmetries and a minor contribution from $\Pi$
symmetric states that maps the three-dimensional unnatural oscillation of
Born-Oppenheimer's potential.
