# Q77907141

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q77907141](https://www.wikidata.org/wiki/Q77907141)  
**Source**: https://4ort.xyz/entity/q77907141


## References

1. SIMBAD
2. Spectroscopy of stellar-like objects contained in the second Byurakan survey. I
3. SDSS DR7 white dwarf catalog
4. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4
5. Spectral classification of stars in the Second Byurakan Sky Survey. II
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. The SDSS Photometric Catalog, Release 7
10. Gaia Data Release 2
11. An improved spectroscopic analysis of DA white dwarfs from the Sloan Digital Sky Survey data release 4