# Q89970709
**Wikidata**: [Q89970709](https://www.wikidata.org/wiki/Q89970709)  
**Source**: https://4ort.xyz/entity/q89970709


## References

1. SIMBAD
2. Discoveries on southern, red sensitive objective-prism plates IV: extension to higher latitudes
3. The first INTEGRAL-OMC catalogue of optically variable sources
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Early Data Release 3
7. Gaia Data Release 2