# HK Boötis
**Wikidata**: [Q86447889](https://www.wikidata.org/wiki/Q86447889)  
**Source**: https://4ort.xyz/entity/hk-bo-tis


## References

1. SIMBAD
2. VizieR
3. VizieR Online Data Catalog: Henry Draper Catalogue and Extension, published in Ann. Harvard Obs. 91-100 (1918-1925)
4. ASAS photometry of ROSAT sources. I. Periodic variable stars coincident with bright sources from the ROSAT All Sky Survey
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. The Tycho-2 catalogue of the 2.5 million brightest stars
7. Gaia Data Release 2
8. The Penn State - Torun Centre for Astronomy Planet Search stars. IV. Dwarfs and the complete sample