# Q81816905

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q81816905](https://www.wikidata.org/wiki/Q81816905)  
**Source**: https://4ort.xyz/entity/q81816905


## References

1. SIMBAD
2. SDSS DR7 white dwarf catalog
3. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission
4. The Palomar-Green catalog of ultraviolet-excess stellar objects
5. Revised and updated catalogue of the First Byurakan Survey blue stellar objects
6. A photometric selection of white dwarf candidates in Sloan Digital Sky Survey Data Release 10
7. The SDSS Photometric Catalog, Release 9
8. Gaia Data Release 2