# Q77980827

> RR Lyrae variable star in the constellation Hydra

**Wikidata**: [Q77980827](https://www.wikidata.org/wiki/Q77980827)  
**Source**: https://4ort.xyz/entity/q77980827


## References

1. SIMBAD
2. Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample
3. Probing the outer galactic halo with RR Lyrae from the Catalina surveys
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. The SDSS Photometric Catalog, Release 7
6. Gaia Data Release 2
7. A Disk Origin for the Monoceros Ring and A13 Stellar Overdensities