# Q77909699

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q77909699](https://www.wikidata.org/wiki/Q77909699)  
**Source**: https://4ort.xyz/entity/q77909699


## References

1. SIMBAD
2. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4
3. SDSS DR7 white dwarf catalog
4. A photometric selection of white dwarf candidates in Sloan Digital Sky Survey Data Release 10
5. On the spectral evolution of cool, helium-atmosphere white dwarfs: detailed spectroscopic and photometric analysis of DZ stars
6. The Sixth Data Release of the Sloan Digital Sky Survey
7. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
8. The USNO-B Catalog
9. The SDSS Photometric Catalog, Release 7
10. Gaia Data Release 2
11. The SDSS Photometric Catalog, Release 6
12. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog