Asteroidal Activity among Meteor Datasets: Confirmed New “Rock-comet” Stream and Search for a Tidal-disruption Signature

Abstract Asteroid activity (e. g. , thermo-mechanical breakdown, impacts, rotational shedding, tidal disruption) can inject meteoroids into near-Earth space and leave detectable signatures in orbit catalogs. We searched for such recent signatures using orbit-similarity statistics and explicit null-hypothesis testing applied to shower-removed, asteroidal video-meteor datasets. Our sample comprises 235, 271 meteors and fireballs from four all-sky video networks (Global Meteor Network, GMN, Cameras for All-sky Meteor Surveillance, CAMS, European viDeo Meteor Observation Network Database, EDMOND, and SonotaCo). For meteors we use the geocentric dissimilarity criterion D N and construct kernel density estimator (KDE) -based sporadic null realizations to evaluate (i) global cumulative similarity distributions and (ii) localized D N -conditioned (D N min _ samples = 2) to isolate the coherent, statistically significant structures. We find no survey-consistent, stream-like signature in the Earth-like, low-inclination region expected for a distinct recent tidal-disruption family; instead, significant-bin membership implies, under our adopted detection thresholds and binning, a conservative combined upper limit of ≤53/235, 271 (≤2. 3 × 10 −4) for sporadic asteroidal meteors plausibly attributable to a detectable recent tidal-disruption-like contribution. In contrast, we confirm the detection of a new diffuse southern Virginid-region stream: GMN exhibits a local z -score of 6. 32 relative to the KDE-null mean in the U − λ ⊙ phase space (global significance of 5. 3 σ), with weaker supporting excess in SonotaCo and EDMOND. DBSCAN isolates N = 282 members (243 GMN plus additional SonotaCo, CAMS, and EDMOND) on a low-perihelion, asteroidal orbit (q = 0. 22 ± 0. 01 au, i = 12. ° 3 ± 1. ° 8, T J = 4. 6 ± 0. 3) consistent with near-Sun thermo-mechanical “rock-comet” activity.