# Calvera

> X-ray source

**Wikidata**: [Q857620](https://www.wikidata.org/wiki/Q857620)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Calvera_(X-ray_source))  
**Source**: https://4ort.xyz/entity/calvera-q857620


## References

1. SIMBAD
2. VizieR
3. Freebase Data Dumps. 2013
4. Discovery of an Isolated Compact Object at High Galactic Latitude