# 33 Ophiuchi

> star in the constellation Hercules

**Wikidata**: [Q6871836](https://www.wikidata.org/wiki/Q6871836)  
**Source**: https://4ort.xyz/entity/33-ophiuchi


## References

1. SIMBAD
2. New bright peculiar and metallic-line A stars
3. Spectral classification of 533 B8-A2 stars and the mean absolute magnitude of A0V stars
4. A study of the bright A stars. I. A catalogue of spectral classifications
5. Washington Double Star Catalog
6. The Tycho-2 catalogue of the 2.5 million brightest stars
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. Gaia Early Data Release 3
9. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
10. Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue
11. The revision of the general catalogue of radial velocities
12. Normal A0−A1 stars with low rotational velocities. I. Abundance determination and classification
13. Rotational velocities of A-type stars. III. Velocity distributions
14. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i
15. Gaia Data Release 2