# Q66635609
**Wikidata**: [Q66635609](https://www.wikidata.org/wiki/Q66635609)  
**Source**: https://4ort.xyz/entity/q66635609


## References

1. SIMBAD
2. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. Gaia Data Release 2
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Chromospheric activities and kinematics for solar type dwarfs and subgiants: analysis of the activity distribution and the AVR
7. The FEROS-Lick/SDSS observational data base of spectral indices of FGK stars for stellar population studies