# 9 Sagittae

> star in the constellation Sagitta

**Wikidata**: [Q64918050](https://www.wikidata.org/wiki/Q64918050)  
**Source**: https://4ort.xyz/entity/9-sagittae


## References

1. SIMBAD
2. The Galactic O-Star Spectroscopic Survey. I. Classification system and bright northern stars in the blue-violet at R ~ 2500
3. Catalogue of Stellar Photometry in Johnson's 11-color system
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. Gaia Early Data Release 3
6. APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South
7. The IACOB project. V. Spectroscopic parameters of the O-type stars in the modern grid of standards for spectral classification
8. Gaia Data Release 2