Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimizing orbits for TianQin   TianQin is a geocentric space-based gravitational-wave observatory mission
consisting of three drag-free controlled satellites in an equilateral triangle
with an orbital radius of $ 10^{5}$ km. The constellation faces the white-dwarf
binary RX J0806.3+1527 located slightly below the ecliptic plane, and is
subject to gravitational perturbations that can distort the formation. In this
study, we present combined methods to optimize the TianQin orbits so that a set
of 5-year stability requirements can be met. Moreover, we discuss slow
long-term drift of the detector pointing due to orbital precession, and put
forward stable orbits with six other pointings along the lunar orbital plane.
Some implications of the findings are pointed out.

10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an