# QT Ursae Majoris

> astrophysical X-ray source in the constellation Ursa Major

**Wikidata**: [Q81919851](https://www.wikidata.org/wiki/Q81919851)  
**Source**: https://4ort.xyz/entity/qt-ursae-majoris


## References

1. SIMBAD
2. VizieR
3. Automated variable star classification using the Northern Sky Variability Survey
4. Source
5. The Catalina surveys periodic variable 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 Data Release 2
9. ROSAT All-Sky Survey Faint Source Catalogue