# Tau1 Hydrae

> multiple star system in the constellation Hydra

**Wikidata**: [Q3232684](https://www.wikidata.org/wiki/Q3232684)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Tau1_Hydrae)  
**Source**: https://4ort.xyz/entity/tau1-hydrae


## References

1. A catalogue of multiplicity among bright stellar systems
2. SB9: The ninth catalogue of spectroscopic binary orbits
3. SIMBAD
4. The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars
5. Washington Double Star Catalog
6. Freebase Data Dumps. 2013
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. Gaia Early Data Release 3
9. Gaia Data Release 2
10. Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants