# Q77412714

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q77412714](https://www.wikidata.org/wiki/Q77412714)  
**Source**: https://4ort.xyz/entity/q77412714


## References

1. SIMBAD
2. SDSS DR7 white dwarf catalog
3. The Fifth Data Release of the Sloan Digital Sky Survey
4. Gaia Data Release 2
5. The SDSS Photometric Catalog, Release 7
6. White dwarf-main sequence binaries identified within SDSS DR7 and UKIDSS DR5
7. Spectral analysis of 636 white dwarf-M star binaries from the Sloan Digital Sky Survey
8. Constraining the age-activity relation for cool stars: the Sloan Digital Sky Survey Data Release 5 low-mass star spectroscopic sample