{"id":"https://openalex.org/keywords/orbital-elements","display_name":"orbital elements","description":"Orbital elements are parameters that specify the size, shape, orientation, and position of an orbit in celestial mechanics.","display_name_alternatives":["orbital element","keplerian elements","keplerian orbital elements","orbit elements","orbital parameters"],"ids":{"openalex":"https://openalex.org/keywords/orbital-elements","wikidata":"https://www.wikidata.org/wiki/Q272626"},"primary_topic":{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.404,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.404,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","score":0.299,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11082","display_name":"Spacecraft Dynamics and Control","score":0.0832,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"works_count":20390,"cited_by_count":136841,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/orbital-elements","updated_date":"2026-10-22T04:07:25","created_date":"2022-04-12T19:38:12"}