# 23 Ophiuchi

> star in the constellation Ophiuchus

**Wikidata**: [Q15939224](https://www.wikidata.org/wiki/Q15939224)  
**Source**: https://4ort.xyz/entity/23-ophiuchi


## References

1. SIMBAD
2. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
3. The Tycho-2 catalogue of the 2.5 million brightest stars
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. Gaia Early Data Release 3
6. Gaia Data Release 2
7. The atmospheric parameters and spectral interpolator for the MILES stars
8. Rotational and radial velocities for a sample of 761 Hipparcos giants and the role of binarity