# Hercules X-1

> binary star in the constellation Hercules

**Wikidata**: [Q506178](https://www.wikidata.org/wiki/Q506178)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hercules_X-1)  
**Source**: https://4ort.xyz/entity/hercules-x-1


## References

1. SIMBAD
2. Ultraviolet spectra of HZ Herculis/Hercules X-1 from HST : hot gas during total eclipse of the neutron star
3. Virtual International Authority File
4. Freebase Data Dumps. 2013
5. ROTSE all-sky surveys for variable stars. I. Test fields
6. A catalogue of low-mass X-ray binaries in the Galaxy, LMC, and SMC (Fourth edition)
7. New periodic variable stars coincident with ROSAT sources discovered using SuperWASP
8. The Catalina surveys periodic variable star catalog
9. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
10. The SDSS Photometric Catalog, Release 7
11. The seventh data release of the Sloan Digital Sky Survey
12. Gaia Early Data Release 3
13. A new mass estimate for Hercules X-1
14. Gaia Data Release 2