# HAT-P-20

> star

**Wikidata**: [Q4039804](https://www.wikidata.org/wiki/Q4039804)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/HAT-P-20)  
**Source**: https://4ort.xyz/entity/hat-p-20


## References

1. SIMBAD
2. HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets
3. Washington Double Star Catalog
4. Extrasolar Planets Encyclopaedia
5. Fourth USNO CCD Astrograph Catalog
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. Gaia Data Release 2. The catalogue of radial velocity standard stars
10. APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South
11. Improved spectroscopic parameters for transiting planet hosts
12. SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs
13. New and updated stellar parameters for 90 transit hosts