# AS Hydrae

> Algol variable in the constellation Hydra

**Wikidata**: [Q90692111](https://www.wikidata.org/wiki/Q90692111)  
**Source**: https://4ort.xyz/entity/as-hydrae


## References

1. SIMBAD
2. Gaia Data Release 3
3. General Catalogue of Variable Stars, 3rd ed.
4. Orbital period changes and the higher-order multiplicity fraction amongst SuperWASP eclipsing binaries
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Fourth USNO CCD Astrograph Catalog
8. Gaia Early Data Release 3
9. Gaia Data Release 2