# Q81921850

> hot subdwarf star in the constellation Ursa Major

**Wikidata**: [Q81921850](https://www.wikidata.org/wiki/Q81921850)  
**Source**: https://4ort.xyz/entity/q81921850


## References

1. SIMBAD
2. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4
3. The Sixth Data Release of the Sloan Digital Sky Survey
4. The USNO-B Catalog
5. The SDSS Photometric Catalog, Release 7
6. The SDSS Photometric Catalog, Release 9
7. Gaia Data Release 2