Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability and Evolution of Fallen Particles Around the Surface of
  Asteroid (101955) Bennu   In this work, we study the dynamics of particles around Bennu. The goal is to
understand the stability, evolution, and final outcome of the simulated
particles around the asteroid. According to the results, the particle sizes can
be divided into two main groups depending on their behavior. Particles smaller
than a centimeter are quickly removed from the system by solar radiation
pressure, while the dynamics of particles larger than a few centimeters is
dominated by the gravitational field of Bennu. Because of its shape and spin
period, Bennu has eight equilibrium points around it. The structure of the
phase space near its equatorial surface is directly connected to these
equilibrium points. Therefore, we performed numerical simulations to obtain
information about the orbital evolution near the equilibrium points. The
results show that most of the particles larger than a few centimeters fall in
the equatorial region close to the Kingfisher area or close to the region
diametrically opposite to it. In contrast, almost none of these particles fall
in the equatorial region close to the Osprey area. In addition, we also
performed computational experiments considering a spherical cloud of particles
initially orbiting Bennu. Most of the particles in prograde orbits fall on the
surface within our integration period, which was limited to 1.14 years. The
particles preferentially fall near high-altitude regions at low equatorial
latitudes and close to the north pole. The mid-latitudes are those more
depleted of falls, as in the Nightingale and Sandpiper areas.

9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th