# Q81690631

> red giant branch star in the constellation Cygnus

**Wikidata**: [Q81690631](https://www.wikidata.org/wiki/Q81690631)  
**Source**: https://4ort.xyz/entity/q81690631


## References

1. SIMBAD
2. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. Gaia Data Release 2
5. Spectroscopic determination of masses (and implied ages) for red giants
6. Optical high-resolution spectroscopy of 14 young {alpha}-rich stars