Optimizing orbits for TianQin
Abstract
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 105km. 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.
- Publication:
-
International Journal of Modern Physics D
- Pub Date:
- 2019
- DOI:
- 10.1142/S0218271819501219
- arXiv:
- arXiv:2012.03260
- Bibcode:
- 2019IJMPD..2850121Y
- Keywords:
-
- Space gravitational-wave detection;
- TianQin;
- geocentric orbit;
- orbit design;
- orbit optimization;
- 04.80.Nn;
- 95.55.Ym;
- 95.40.+s;
- 95.10.Ce;
- 95.10.Eg;
- Gravitational wave detectors and experiments;
- Gravitational radiation detectors;
- mass spectrometers;
- and other instrumentation and techniques;
- Artificial Earth satellites;
- Celestial mechanics;
- Orbit determination and improvement;
- General Relativity and Quantum Cosmology;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- Int. J. Mod. Phys. D 28, 09, 1950121 (2019)