The existence of meteoroid streams
containing meter-sized meteoroids capable of produc-
ing meteorites after atmospheric interaction was pro-
posed quite recently [1]. Their existence has important
implications because they can be naturally delivering
to the Earth different types of rock-forming materials
from Potentially Hazardous Asteroids (PHA).
The recent identification of Near Earth Object
(NEO) asteroid 2002NY40 as source of meteorite-
dropping bolides [2] opens new questions on the na-
ture of this asteroid, and the physical process that
originated the fireballs detected in 2006 August. Two
of the fireballs exhibited a clear similarity with the
orbit of 2002NY40, while a third meteoroid was hav-
ing an orbit close to NEO 2004NL8. In fact, these five
bodies would be related by the close similarity among
their orbits (Figure 1, and Table 3 of [1]). We try to
focus here on the possible origin of this complex of
bodies on the basis of our present (little) knowledge on
the structure and orbital evolution of asteroids
2002NY40 and 2004NL8
