# action-angle coordinates

> set of canonical coordinates

**Wikidata**: [Q1000646](https://www.wikidata.org/wiki/Q1000646)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Action-angle_coordinates)  
**Source**: https://4ort.xyz/entity/action-angle-coordinates


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)