# Gliese 420
**Wikidata**: [Q5174478](https://www.wikidata.org/wiki/Q5174478)  
**Source**: https://4ort.xyz/entity/gliese-420


## References

1. SIMBAD
2. General Catalogue of Stellar Spectral Classifications (Version 2013-Jul)
3. Washington Double Star Catalog
4. The USNO-B Catalog
5. Validation of the new Hipparcos reduction
6. Calibrating the metallicity of M dwarfs in wide physical binaries with F-, G-, and K-primaries - I: High-resolution spectroscopy with HERMES: stellar parameters, abundances, and kinematics
7. Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert
8. Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants