# LU Hydrae

> binary variable star

**Wikidata**: [Q66531917](https://www.wikidata.org/wiki/Q66531917)  
**Source**: https://4ort.xyz/entity/lu-hydrae


## References

1. SIMBAD
2. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
3. Gaia Data Release 3
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Early Data Release 3
7. APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South
8. Determining ages of APOGEE giants with known distances
9. Gaia Data Release 2