# HAT-P-31

> star in the constellation Hercules

**Wikidata**: [Q4039816](https://www.wikidata.org/wiki/Q4039816)  
**Source**: https://4ort.xyz/entity/hat-p-31


## References

1. SIMBAD
2. The Tycho-2 catalogue of the 2.5 million brightest stars
3. Third U.S. Naval Observatory CCD Astrograph Catalog (UCAC3)
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. Gaia Early Data Release 3
6. Gaia Data Release 2
7. HAT-P-31b,c: A Transiting, Eccentric, Hot Jupiter and a Long-period, Massive Third Body
8. Spectral Properties of Cool Stars: Extended Abundance Analysis of Kepler Objects of Interest