# Q81156858
**Wikidata**: [Q81156858](https://www.wikidata.org/wiki/Q81156858)  
**Source**: https://4ort.xyz/entity/q81156858


## References

1. SIMBAD
2. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. Gaia Data Release 2
6. The chemical composition of carbon stars. I. Carbon, nitrogen and oxygen in 30 cool carbon stars in the galactic disk