Abstract Spectrum-Roentgen-Gamma is an international X-ray astrophysical space observatory, planned to be launched in 2019. The spacecraft will operate in the vicinity of the Lagrangian point of the Sun-Earth system. The nominal lifetime of the mission is 7 years, and it includes all-sky survey and pointed observations in the 0.1–15 keV band. The paper describes technical constraints of the mission, covering launch scenario, spacecraft structure and ground data relay network, and a design of suitable operational orbits. In addition, opportunities to achieve a suitable operational orbit are discussed, including a scenario with a lunar gravity assist and a transfer with an intermediate orbit.
Highlights Spectrum-Roentgen-Gamma is an international X-ray astrophysical space observatory. SRG will be launched in 2019 to the vicinity of the Sun-Earth Lagrangian L2 point. Mission technical constraints require a small-amplitude operational L2 orbit. A lunar gravity assist allows one-impulse transfer to achieve a suitable orbit. An intermediate orbit with a raised perigee enables to reduce orbit amplitudes.
Orbit design for the Spectrum-Roentgen-Gamma mission
Acta Astronautica ; 160 ; 56-61
2019-04-03
6 pages
Article (Journal)
Electronic Resource
English
Mission Design Problems for the Spectrum-Roentgen-Gamma Project
Online Contents | 2019
|Mission Design Problems for the Spectrum-Roentgen-Gamma Project
Springer Verlag | 2019
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