# HD 645

> star in the constellation Cetus

**Wikidata**: [Q3781496](https://www.wikidata.org/wiki/Q3781496)  
**Source**: https://4ort.xyz/entity/q3781496


## References

1. SIMBAD
2. [Identification of a constellation from a position](http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-ref=VIZ5d646f14187f3&-out.add=.&-source=VI/42/out&-c=001.0829%20-13.2757,eq=B1875,rs=2)
3. Source
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Data Release 2
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. The metallicity signature of evolved stars with planets
8. Evolved stars and the origin of abundance trends in planet hosts
9. Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets