# Q84220793

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q84220793](https://www.wikidata.org/wiki/Q84220793)  
**Source**: https://4ort.xyz/entity/q84220793


## References

1. SIMBAD
2. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4
3. A photometric selection of white dwarf candidates in Sloan Digital Sky Survey Data Release 10
4. On the spectral evolution of cool, helium-atmosphere white dwarfs: detailed spectroscopic and photometric analysis of DZ stars
5. The Sixth Data Release of the Sloan Digital Sky Survey
6. The USNO-B Catalog
7. The SDSS Photometric Catalog, Release 7
8. The SDSS Photometric Catalog, Release 9
9. Gaia Data Release 2
10. SDSS DR7 white dwarf catalog
11. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog