# NN Serpentis

> star in the constellation Serpens

**Wikidata**: [Q2091284](https://www.wikidata.org/wiki/Q2091284)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/NN_Serpentis)  
**Source**: https://4ort.xyz/entity/nn-serpentis


## References

1. SIMBAD
2. Precise mass and radius values for the white dwarf and low mass M dwarf in the pre-cataclysmic binary NN Serpentis
3. Freebase Data Dumps. 2013
4. Up-to-date linear elements of eclipsing binaries
5. The Catalina surveys periodic variable star catalog
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Early Data Release 3
8. Two planets orbiting the recently formed post-common envelope binary NN Serpentis
9. Gaia Data Release 2
10. Evidence for an external origin of heavy elements in hot DA white dwarfs