# GJ 21 b

> unconfirmed exoplanet in the constellation Cepheus

**Wikidata**: [Q113502665](https://www.wikidata.org/wiki/Q113502665)  
**Source**: https://4ort.xyz/entity/gj-21-b


## References

1. Extrasolar Planets Encyclopaedia
2. HADES RV Programme with HARPS-N at TNG. XV. Planetary occurrence rates around early-M dwarfs