Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Is the outer Solar System chaotic?   The existence of chaos in the system of Jovian planets has been in question
for the past 15 years. Various investigators have found Lyapunov times ranging
from about 5 millions years upwards to infinity, with no clear reason for the
discrepancy. In this paper, we resolve the issue. The position of the outer
planets is known to only a few parts in 10 million. We show that, within that
observational uncertainty, there exist Lyapunov timescales in the full range
listed above. Thus, the ``true'' Lyapunov timescale of the outer Solar System
cannot be resolved using current observations.

9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat