// ORBITAL LOGISTICS AND PROPULSION TERM
Ascending Node
The point where an orbiting object crosses from below to above a reference plane, such as the Earth's equatorial plane.
TECHNICAL DEFINITION
The ascending node is one of the orbital nodes where an orbiting body (e.g., satellite) crosses the reference plane (e.g., Earth's equatorial plane, ecliptic) moving from south to north, a key orbital element.
BACKGROUND
The International Space Station (ISS) is a space station in low Earth orbit (LEO). It is the product of the International Space Station program and is operated by five partner space agencies: NASA, Roscosmos (Russia), ESA (Europe), JAXA (Japan), and CSA (Canada). It is the first space station built, maintained and crewed through international cooperation and the largest human spacecraft ever constructed. It is an orbital research station, where scientific experiments in microgravity are conducted and the space environment is studied. Since 2 November 2000, it has hosted the longest continuous presence of humans in space. Alongside Tiangong, it is one of the only two currently operational space stations.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Northbound crossing
- Upward node
- RAAN (Right Ascension of the Ascending Node)
USAGE NOTE
The ascending node is a critical parameter for defining an orbit's orientation in space, especially for Earth observation satellites.
DEVELOPERS
Organizations developing technology related to Ascending Node.
Develops and operates advanced launch vehicles and satellite constellations (Starlink). Their operations require precise orbital mechanics, including managing the ascending node for satellite deployment, phasing, and collision avoidance.
A U.S. government agency that conducts space missions, operates numerous satellites, and plans complex interplanetary trajectories. All these activities critically depend on understanding and manipulating orbital elements like the ascending node for mission design and execution.
Engaged in various space missions, satellite development, and launch operations. Similar to NASA, their work involves sophisticated orbital mechanics for satellite positioning, constellation management, and rendezvous procedures, where the ascending node is a key parameter.
A leading provider of Earth intelligence and space infrastructure. They design, build, and operate Earth observation satellites and robotics, necessitating expert knowledge and application of orbital mechanics for imaging targets and maintaining satellite constellations.
A major defense contractor and aerospace company that develops and manufactures satellites, launch vehicles, and related space systems. Their work involves significant expertise in orbital mechanics for mission design and spacecraft operations, inherently utilizing orbital parameters.
Provides launch services and develops satellite platforms (Photon). Their business relies on accurately placing satellites into specific orbits, requiring precise calculations involving all orbital elements, including the ascending node.
Operates the world's largest fleet of Earth observation satellites. Managing such a large constellation for optimal imaging coverage and collision avoidance requires continuous monitoring and adjustment of orbital parameters, including the ascending node.
Specializes in space situational awareness (SSA) and space traffic management (STM). They track objects in orbit and predict conjunctions, which is fundamentally based on precise determination and propagation of orbital elements like the ascending node.
A commercial launch service provider. They deliver satellites to various orbits, requiring detailed orbital mechanics planning to achieve the client's desired orbital parameters, including the ascending node, upon deployment.