# HH Boötis
**Wikidata**: [Q78311525](https://www.wikidata.org/wiki/Q78311525)  
**Source**: https://4ort.xyz/entity/hh-bo-tis


## References

1. SIMBAD
2. The Catalina surveys periodic variable star catalog
3. Orbital period changes and the higher-order multiplicity fraction amongst SuperWASP eclipsing binaries
4. A catalog of 1022 bright contact binary stars
5. Automated variable star classification using the Northern Sky Variability Survey
6. Source
7. Fourth USNO CCD Astrograph Catalog
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. The Tycho-2 catalogue of the 2.5 million brightest stars
10. Gaia Early Data Release 3
11. A BVRCIC Survey of W Ursae Majoris Binaries
12. Gaia Data Release 2