# Q89821639

> red giant branch star in the constellation Cygnus

**Wikidata**: [Q89821639](https://www.wikidata.org/wiki/Q89821639)  
**Source**: https://4ort.xyz/entity/q89821639


## References

1. SIMBAD
2. Activity indicators and stellar parameters of the Kepler targets. An application of the ROTFIT pipeline to LAMOST-Kepler stellar spectra.
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. Photometric observations of the star cluster NGC 6819
5. Third U.S. Naval Observatory CCD Astrograph Catalog (UCAC3)
6. WIYN open cluster study. LX. Spectroscopic binary orbits in NGC 6819
7. Gaia Data Release 2
8. The Open Cluster Chemical Abundances and Mapping Survey. II. Precision Cluster Abundances for APOGEE Using SDSS DR14
9. Strömgren Survey for Asteroseismology and Galactic Archaeology: Let the Saga Begin
10. Spectroscopic abundances in the open cluster NGC 6819
11. Spectroscopic determination of masses (and implied ages) for red giants