# HD 191939 d

> extrasolar planet

**Wikidata**: [Q113597241](https://www.wikidata.org/wiki/Q113597241)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/HD_191939_d)  
**Source**: https://4ort.xyz/entity/hd-191939-d


## References

1. SIMBAD
2. HD 191939: Three Sub-Neptunes Transiting a Sun-like Star Only 54 pc Away
3. HD 191939 revisited: New and refined planet mass determinations, and a new planet in the habitable zone
4. TESS-Keck Survey. IX. Masses of Three Sub-Neptunes Orbiting HD 191939 and the Discovery of a Warm Jovian plus a Distant Substellar Companion
5. Extrasolar Planets Encyclopaedia
6. Exoplanet Archive
7. Gaia Data Release 2