# Q77921900

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q77921900](https://www.wikidata.org/wiki/Q77921900)  
**Source**: https://4ort.xyz/entity/q77921900


## References

1. SIMBAD
2. SDSS DR7 white dwarf catalog
3. The Sixth Data Release of the Sloan Digital Sky Survey
4. The SDSS Photometric Catalog, Release 7
5. Gaia Data Release 2