# Q87849970

> Algol variable in the constellation Ophiuchus

**Wikidata**: [Q87849970](https://www.wikidata.org/wiki/Q87849970)  
**Source**: https://4ort.xyz/entity/q87849970


## References

1. SIMBAD
2. MK classifications of some northern hemisphere binary systems
3. Up-to-date linear elements of eclipsing binaries
4. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
5. The Tycho-2 catalogue of the 2.5 million brightest stars
6. Gaia Early Data Release 3
7. Gaia Data Release 2