# HD 20631

> binary star system in the constellation Eridanus

**Wikidata**: [Q7267929](https://www.wikidata.org/wiki/Q7267929)  
**Source**: https://4ort.xyz/entity/q7267929


## References

1. [A catalogue of multiplicity among bright stellar systems](http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ615f65303563c9&-out.add=.&-source=J/MNRAS/389/869/table1&recno=490)
2. [VizieR](https://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ615f653235646a&-out.add=.&-source=VI/42/out&-c=048.2493%20-19.0169,eq=B1875,rs=2)
3. Source
4. Washington Double Star Catalog
5. SIMBAD
6. Bright Star Catalogue
7. Validation of the new Hipparcos reduction
8. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
9. Cerro Armazones spectroscopic survey of F dwarfs
10. New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?
11. Spectroscopy of New High Proper Motion Stars in the Northern Sky. I. New Nearby Stars, New High-Velocity Stars, and an Enhanced Classification Scheme for M Dwarfs