The complete characterisation of the Tunguska event of 30th June 1908 is still a challenge
for astrophysicists. We studied the huge amount of scientific literature to select data directly …

Context. From numerical simulations, it is known that some secular resonances may affect
the motion of near-Earth objects (NEOs). However, the specific location of the secular …

ABSTRACT All near-Earth asteroids (NEAs) that reach sufficiently small perihelion distances
will undergo a so-called super-catastrophic disruption. The mechanisms causing such …

As follows from dynamical studies, in the course of evolution, most near-Earth objects reach
orbits with small perihelion distances. Changes of the asteroids in the vicinity of the Sun …

Meteoroids observed to disintegrate in the terrestrial atmosphere can be directly linked to
their parent bodies in case that they belong to certain meteor showers. We present a list of …

It is known, from observational data recorded from airbursts, that small asteroids breakup at
dynamical pressures lower than their mechanical strength. This means that actual …

Numerical calculations of orbit evolutions of 1694 numbered asteroids included in the IRAS
catalogue, from 13.11. 1996 to 06.03. 2006 were carried out. The values da-differences …

Studies of the orbital evolution show that, with a high probability, the Chelyabinsk object was
near the Sun about 1 Myr ago. This is consistent with the estimate of a cosmic ray exposure …

The current philosophy of impact hazard considers the danger from small asteroids
negligible. However, several facts claim for a revision of this philosophy. In this paper, some …

Recent investigations on small asteroids, initiated by the Chelyabinsk event, are reviewed.
New estimates of the terrestrial impact rate, importance of Sun-grazing conditions in the …