# Q77839097

> spectroscopic binary in the constellation Serpens

**Wikidata**: [Q77839097](https://www.wikidata.org/wiki/Q77839097)  
**Source**: https://4ort.xyz/entity/q77839097


## References

1. SIMBAD
2. The Galactic O-star Spectroscopic Survey (GOSSS). III. 142 additional O-type systems
3. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
4. Catalogue of Stellar Photometry in Johnson's 11-color system
5. Fourth USNO CCD Astrograph Catalog
6. Validation of the new Hipparcos reduction
7. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
8. The interstellar Ca II distance scale