Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Draconid meteoroid stream 2018: prospects for satellite impact
  detection   Predictions of the 2018 Draconid activity at the Earth and the Sun-Earth L1
and L2 Lagrange points are presented. Numerical simulations of the meteoroids'
ejection and evolution from comet 21P/Giacobini-Zinner are performed with a
careful implementation of the results analysis and weighting. Model meteoroid
fluxes at Earth are derived using as calibration the main peak date, intensity,
and shower profiles of previous Draconid outbursts. Good agreement between the
model and measurements is found for the 1933, 1946, 1998 and 2011 showers for a
meteoroid size distribution index at ejection of about 2.6. A less accurate
estimate of the peak time for the 1985, 2005 and 2012 predominantly
radio-observed outbursts was found by considering the contribution of
individual ejection epochs, while the model peak flux estimate was found to
agree with observations to within a factor 3. Despite the promising geometrical
configuration in 2018, our simulations predict low Draconid activity is
expected on Earth, with a maximum of less than a few tens of meteors per hour
around midnight the 9th of October, confirming previous models. At the L1 and
L2 Lagrange points, however, the flux estimates suggest a 'meteoroid storm'.
The Gaia spacecraft at the L2 region might be able to detect small (~ {\mu}g)
Draconid meteoroid impacts centered in a two-hour window around 18h30 UT on the
8th of October, 2018.

9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ