# Q84223599

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q84223599](https://www.wikidata.org/wiki/Q84223599)  
**Source**: https://4ort.xyz/entity/q84223599


## References

1. SIMBAD
2. Cool White Dwarfs in the Sloan Digital Sky Survey
3. A detailed model atmosphere analysis of cool white dwarfs in the Sloan Digital Sky Survey
4. The USNO-B Catalog
5. The Sixth Data Release of the Sloan Digital Sky Survey
6. The SDSS Photometric Catalog, Release 9
7. Gaia Data Release 2
8. Ultracool white dwarfs and the age of the Galactic disc