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 L 2 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.


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    Title :

    Orbit design for the Spectrum-Roentgen-Gamma mission


    Contributors:

    Published in:

    Acta Astronautica ; 160 ; 56-61


    Publication date :

    2019-04-03


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Mission Design Problems for the Spectrum-Roentgen-Gamma Project

    Nazirov, R. R. / Eismont, N. A. / Aref’yev, V. A. et al. | Online Contents | 2019


    Mission Design Problems for the Spectrum-Roentgen-Gamma Project

    Nazirov, R. R. / Eismont, N. A. / Aref’yev, V. A. et al. | Springer Verlag | 2019