# HD 2638

> star system in the constellation Cetus

**Wikidata**: [Q1194679](https://www.wikidata.org/wiki/Q1194679)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/HD_2638)  
**Source**: https://4ort.xyz/entity/hd-2638


## References

1. Washington Double Star Catalog
2. SIMBAD
3. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
4. Freebase Data Dumps. 2013
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. Third U.S. Naval Observatory CCD Astrograph Catalog (UCAC3)
7. The DENIS database, 3rd Release
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. Gaia Early Data Release 3
10. Gaia Data Release 2
11. The HARPS search for southern extra-solar planets. IV. Three close-in planets around HD 2638, HD 27894 and HD 63454
12. Gaia Data Release 2. The catalogue of radial velocity standard stars
13. Deriving precise parameters for cool solar-type stars. Optimizing the iron line list
14. SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs
15. Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program
16. Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
17. Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program. Galactic stellar populations and planets
18. Chemical abundances of 1111 FGK stars from the HARPS-GTO planet search sample. III. Sulfur
19. Age consistency between exoplanet hosts and field stars
20. The Sixth Data Release of the Radial Velocity Experiment (RAVE). II. Stellar Atmospheric Parameters, Chemical Abundances, and Distances