Highlights Satellites in Sun-synchronous orbits are evaluated on their post-mission lifetime. Compliance to international mitigation guidelines is assessed to be at 20–40% prior to 2014. In 2018, this number has increased to 80%. Compliance is achieved by choosing suitable orbital geometries for the majority of cases. Active orbit lowering plays a lesser role in this.

    Abstract Due to ever increasing accessibility, recent years have seen a fast growing number of launches to space, especially to Sun-synchronous orbit. The spent rocket parts, and eventually non-functioning payloads of these launches remain in orbit. It is well established that this accumulation of space debris over time is quickly making this the most severe threat to future spaceflight operations. To address this, international guidelines have been established including a maximum of 25-year remaining orbital lifetime after end of operational life. This paper evaluates if Sun-synchronous satellites adhere to this guideline. To determine the compliance, the operational status of satellites with orbital control capabilities is established using a maneuver detection algorithm. For satellites without this capability, a model is created based on mass and design lifetime. The remaining orbital lifetime is determined using semi-analytic propagation. The results reveal that compliance was poor in the past, with 20 to 40% prior to 2014, but has increased to 95% in 2018. Satellites with a mass lower than 10 kg have a compliance of 86% compared to 35% for heavier satellites. Analysis shows that compliance is mostly a result of choosing an operational orbit with a sufficient natural decay, and less due to altitude lowering maneuvers near end-of-life. The relative popularity of SSO may demand re-evaluation of current guidelines to sustain future operations in these valuable orbits.


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    Titel :

    Sun-synchronous spacecraft compliance with international space debris guidelines


    Beteiligte:
    Schild, Maarten (Autor:in) / Noomen, Ron (Autor:in)

    Erschienen in:

    Advances in Space Research ; 72 , 7 ; 2585-2596


    Erscheinungsdatum :

    2022-07-05


    Format / Umfang :

    12 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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