# NN Andromedae

> RR Lyrae variable star in the constellation Andromeda

**Wikidata**: [Q90689529](https://www.wikidata.org/wiki/Q90689529)  
**Source**: https://4ort.xyz/entity/nn-andromedae


## References

1. SIMBAD
2. VizieR
3. Gaia Data Release 2
4. Probing the outer galactic halo with RR Lyrae from the Catalina surveys
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. The SDSS Photometric Catalog, Release 7
7. Kinematics of metal-poor stars in the Galaxy. II. Proper motions for a large nonkinematically selected sample