# Upsilon Ophiuchi

> multiple star system in the constellation Ophiuchus

**Wikidata**: [Q128177](https://www.wikidata.org/wiki/Q128177)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Upsilon_Ophiuchi)  
**Source**: https://4ort.xyz/entity/upsilon-ophiuchi


## References

1. Washington Double Star Catalog
2. SIMBAD
3. SB9: The ninth catalogue of spectroscopic binary orbits
4. Catalogue of suspected variable stars
5. General catalogue of AP and AM stars
6. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5
7. Gaia Data Release 3
8. Freebase Data Dumps
9. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
10. The Volume-limited A-Star (VAST) survey. I. Companions and the unexpected X-ray detection of B6-A7 stars
11. The Tycho-2 catalogue of the 2.5 million brightest stars
12. Gaia Early Data Release 3
13. Automated spectroscopic abundances of A and F-type stars using echelle spectrographs II. Abundances of 140 A-F stars from ELODIE and CORALIE
14. Accurate stellar rotational velocities using the Fourier transform of the cross correlation maximum