Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Precautionary Planetary Defence   The question of whether to attempt deflections during planetary defence
emergencies has been subject to considerable decision-making analysis (Schmidt
2018; SMPAG Ad-Hoc Working Group on Legal Issues 2020). Hypothetical situations
usually involve a newly discovered asteroid with a high impact probability on a
set timescale. This paper addresses two further complexities: (1) limiting
missions to an asteroid due to the risk of a human-caused Earth impact; and (2)
active management of asteroids to place them in "safe harbours", even when
impact risks are otherwise below "decision to act" thresholds. We use Apophis
as a case study, and address the two complexities in turn.

21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas