# Q89702059
**Wikidata**: [Q89702059](https://www.wikidata.org/wiki/Q89702059)  
**Source**: https://4ort.xyz/entity/q89702059


## References

1. SIMBAD
2. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
3. MK classification for visual binary components
4. Washington Double Star Catalog
5. Fourth USNO CCD Astrograph Catalog
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Data Release 2
8. A survey of proper-motion stars. XVI. Orbital solutions for 171 single-lined spectroscopic binaries
9. Statistics of spectroscopic sub-systems in visual multiple stars