# Q87684706

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q87684706](https://www.wikidata.org/wiki/Q87684706)  
**Source**: https://4ort.xyz/entity/q87684706


## References

1. SIMBAD
2. Evidence for homogeneous ionization of helium in the local interstellar medium from EUVE spectroscopy of hot DA stars
3. SDSS DR7 white dwarf catalog
4. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission
5. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4
6. A photometric selection of white dwarf candidates in Sloan Digital Sky Survey Data Release 10
7. The Sixth Data Release of the Sloan Digital Sky Survey
8. The SDSS Photometric Catalog, Release 9
9. Gaia Data Release 2
10. Constraints on the initial-final mass relation from wide double white dwarfs