Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativistic aspects of rotational motion of celestial bodies   Relativistic modelling of rotational motion of extended bodies represents one
of the most complicated problems of Applied Relativity. The relativistic
reference systems of IAU (2000) give a suitable theoretical framework for such
a modelling. Recent developments in the post-Newtonian theory of Earth rotation
in the limit of rigidly rotating multipoles are reported below. All components
of the theory are summarized and the results are demonstrated. The experience
with the relativistic Earth rotation theory can be directly applied to model
the rotational motion of other celestial bodies. The high-precision theories of
rotation of the Moon, Mars and Mercury can be expected to be of interest in the
near future.

22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th