// ORBITAL LOGISTICS AND PROPULSION TERM

SSO

An acronym for Sun-Synchronous Orbit, a special type of polar orbit where a satellite always passes over any given point on Earth's surface at the same local solar time.

SSO — illustration from Wikipedia
Image via Wikipedia

TECHNICAL DEFINITION

SSO, or Sun-Synchronous Orbit, is a specific type of near-polar orbit designed such that a satellite passes over any given point on the Earth's surface at the same local mean solar time each day, providing consistent illumination conditions for Earth observation, remote sensing, and reconnaissance missions.

BACKGROUND

Skyroot Aerospace Private Limited is a private Indian aerospace manufacturer and commercial launch service provider headquartered in Hyderabad, Telangana. The company was founded by former engineers and scientists from ISRO.

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SYNONYMS & ALIASES

  • Sun-sync orbit
  • solar-synchronous orbit

USAGE NOTE

Earth observation satellites commonly use SSO to ensure consistent lighting conditions for imaging and data collection.

DEVELOPERS

Organizations developing technology related to SSO.

  • SpaceX

    Develops and operates advanced rockets and spacecraft, frequently launching Earth observation and scientific satellites into Sun-Synchronous Orbits (SSO) for commercial and government clients.

  • Arianespace

    A European launch services company that uses its Ariane and Vega rockets to deploy a wide range of payloads, including numerous Earth observation satellites, into Sun-Synchronous Orbits (SSO).

  • United Launch Alliance (ULA)

    A joint venture of Lockheed Martin and Boeing, providing launch services for U.S. government missions, including many reconnaissance, weather, and Earth science satellites placed into Sun-Synchronous Orbits (SSO) using Atlas V and Delta IV rockets.

  • Maxar Technologies

    A leading provider of space technology and Earth intelligence solutions, designing and building high-resolution imaging satellites that operate in Sun-Synchronous Orbits (SSO) for geospatial intelligence and Earth observation.

  • Planet Labs

    Operates the world's largest fleet of Earth observation satellites, with the majority of its Dove and SkySat constellations deployed into Sun-Synchronous Orbits (SSO) to provide near-daily imagery of the entire landmass.

  • Rocket Lab

    Specializes in small satellite launch services with its Electron rocket, frequently deploying Earth observation and remote sensing satellites for commercial and government customers into Sun-Synchronous Orbits (SSO).

  • European Space Agency (ESA)

    An intergovernmental organization that develops and implements a wide range of space missions, including numerous Earth observation satellites (e.g., Copernicus Sentinels) that rely on Sun-Synchronous Orbits (SSO) for consistent global coverage.

  • Airbus Defence and Space

    A major European aerospace manufacturer that develops and builds a variety of satellites, including Earth observation satellites for meteorological and environmental monitoring, many of which are designed to operate in Sun-Synchronous Orbits (SSO).

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