# Q81856239

> RR Lyrae variable star in the constellation Hercules

**Wikidata**: [Q81856239](https://www.wikidata.org/wiki/Q81856239)  
**Source**: https://4ort.xyz/entity/q81856239


## References

1. SIMBAD
2. VizieR
3. Automated variable star classification using the Northern Sky Variability Survey
4. Gaia Data Release 2
5. Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample
6. Analysis of RR Lyrae Stars in the Northern Sky Variability Survey
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. Fourth USNO CCD Astrograph Catalog
9. The Pan-STARRS release 1 (PS1) Survey - DR1