# NN Virginis

> RR Lyrae variable star in the constellation Virgo

**Wikidata**: [Q90328839](https://www.wikidata.org/wiki/Q90328839)  
**Source**: https://4ort.xyz/entity/nn-virginis


## References

1. SIMBAD
2. VizieR Online Data Catalog: Henry Draper Catalogue and Extension, published in Ann. Harvard Obs. 91-100 (1918-1925)
3. Gaia Data Release 3
4. Up-to-date linear elements of eclipsing binaries
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. Kinematics of W Ursae Majoris type binaries and evidence of the two types of formation
9. New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s)