# GK Hydrae
**Wikidata**: [Q85085685](https://www.wikidata.org/wiki/Q85085685)  
**Source**: https://4ort.xyz/entity/gk-hydrae


## References

1. SIMBAD
2. MK classifications of some northern hemisphere binary systems
3. Gaia Data Release 3
4. Up-to-date linear elements of eclipsing binaries
5. TESS Eclipsing Binary Stars. I. Short-cadence Observations of 4584 Eclipsing Binaries in Sectors 1–26
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. The Tycho-2 catalogue of the 2.5 million brightest stars
8. ASAS photometry of ROSAT sources. I. Periodic variable stars coincident with bright sources from the ROSAT All Sky Survey
9. Gaia Early Data Release 3
10. Kinematics of chromospherically active binaries and evidence of an orbital period decrease in binary evolution
11. Gaia Data Release 2