# V439 Herculis

> RR Lyrae variable star in the constellation Hercules

**Wikidata**: [Q88378662](https://www.wikidata.org/wiki/Q88378662)  
**Source**: https://4ort.xyz/entity/v439-herculis


## References

1. SIMBAD
2. VizieR
3. Washington Double Star Catalog
4. Gaia Data Release 2
5. Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample
6. General Catalogue of Variable Stars, 3rd ed.
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. The SDSS Photometric Catalog, Release 9
9. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
10. The Catalina surveys periodic variable star catalog
11. Gaia Early Data Release 3
12. Gaia Data Release 3