Synopsis
The document “Best Practices for the Sustainability of Space Operations” (Version 2.35, dated November 2023) outlines a comprehensive set of guidelines and practices aimed at ensuring the sustainable and responsible use of space. It addresses the growing concern about space debris and the risks it poses to space operations.
The document begins by acknowledging the increasing number of artificial objects in Earth’s orbit since the first orbital launch in 1957. This increase has led to a higher risk of collisions, potentially interrupting crucial space services. The document highlights the need for mitigation measures to minimize orbital debris and ensure safe access to space in the future.
Historical Context and Existing Guidelines
It refers to the efforts of the Inter-Agency Space Debris Coordination Committee (IADC) and the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS) in establishing space debris mitigation guidelines. These guidelines are aimed at limiting debris generation and addressing the growth of debris population over time. The International Organization for Standardization (ISO) and the Consultative Committee for Space Data Systems (CCSDS) also contribute to these standards, incorporating both IADC and UN guidelines.
National Regulations and Evolving Space Operations
The document mentions that several spacefaring nations have set up regulatory frameworks reflecting these international guidelines. It also notes the evolution of space operations with new types of spacecraft, such as CubeSats and large satellite constellations, which were not envisioned when the original guidelines were established.
Endorsement of Best Practices
Space industry stakeholders endorse and commit to implementing the best practices identified in the document. These practices are categorized by different types of entities involved in space operations, including associations, flight safety organizations, launch providers, commercial operators, and others.
Specific Best Practices Outlined
The document outlines detailed best practices for sustainability in space operations. These include:
- Avoiding Intentional Collisions: Stakeholders should avoid intentional fragmentations or collisions that risk other nations’ interests.
- Information Exchange for Safety-of-Flight: Operators should share information relevant to collision avoidance and spaceflight safety.
- Sustainability Considerations in Launch Services: Operators should consider the environmental impact of launch service providers.
- Safety in Mission and Constellation Design: Safety should be a priority in designing spacecraft constellations and fleets.
- Spacecraft Design Best Practices: Guidelines for the design of spacecraft, including disposal processes and tracking capabilities.
- Preparation for Future Servicing: Design considerations for future refueling and disposal services.
- Operational Concepts for Sustainability: Practices to enhance the sustainability of space operations, including active collision avoidance.
- Rules of the Road and Maneuver Prioritization: Guidelines for collision avoidance maneuvers and prioritization among spacecraft.
- Security Measures to Prevent Unauthorized Access: Recommendations for cybersecurity in space operations.
Glossary and References
The document concludes with a glossary defining key terms related to space operations and a comprehensive list of references.
The document represents a concerted effort by the international space community to address the challenges posed by space debris and ensure the long-term sustainability of space operations. It emphasizes the importance of collaboration, information sharing, and adherence to established guidelines and best practices.


