# BD+20°2457 b

> extrasolar planet

**Wikidata**: [Q798897](https://www.wikidata.org/wiki/Q798897)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/BD+20°2457_b)  
**Source**: https://4ort.xyz/entity/bd-20-2457-b


## References

1. SIMBAD
2. Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes
3. Substellar-mass companions to the K-dwarf BD+14 4559 and the K-giants HD 240210 and BD+20 2457
4. Extrasolar Planets Encyclopaedia
5. Exoplanet Archive
6. Freebase Data Dumps. 2013
7. Gaia Early Data Release 3