# International Celestial Reference System

> celestial reference system using reference celestial sources observed at radio wavelengths

**Wikidata**: [Q1666400](https://www.wikidata.org/wiki/Q1666400)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/International_Celestial_Reference_System_and_its_realizations)  
**Source**: https://4ort.xyz/entity/international-celestial-reference-system


## References

1. Freebase Data Dumps. 2013