# HD 233731

> star in the constellation Ursa Major

**Wikidata**: [Q4039805](https://www.wikidata.org/wiki/Q4039805)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/HD_233731)  
**Source**: https://4ort.xyz/entity/hd-233731


## References

1. SIMBAD
2. Source
3. Extrasolar Planets Encyclopaedia
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Third U.S. Naval Observatory CCD Astrograph Catalog (UCAC3)
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Early Data Release 3
8. Gaia Data Release 2
9. HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets
10. Homogeneous spectroscopic parameters for bright planet host stars from the northern hemisphere
11. Age consistency between exoplanet hosts and field stars
12. Improved spectroscopic parameters for transiting planet hosts