# SR 21A

> star in the constellation Ophiuchus

**Wikidata**: [Q88056988](https://www.wikidata.org/wiki/Q88056988)  
**Source**: https://4ort.xyz/entity/sr-21a


## References

1. SIMBAD
2. An optical spectroscopic study of T Tauri stars. I. Photospheric properties
3. Rotation of Low-mass Stars in Upper Scorpius and ρ Ophiuchus with K2
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. Gaia Data Release 2
6. Gaia Data Release 2. Summary of the contents and survey properties