# Q77413468

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q77413468](https://www.wikidata.org/wiki/Q77413468)  
**Source**: https://4ort.xyz/entity/q77413468


## References

1. SIMBAD
2. Post-common envelope binaries from SDSS - VII. A catalogue of white dwarf-main sequence binaries
3. The Fifth Data Release of the Sloan Digital Sky Survey
4. Gaia Data Release 2
5. The SDSS Photometric Catalog, Release 7
6. Constraining the age-activity relation for cool stars: the Sloan Digital Sky Survey Data Release 5 low-mass star spectroscopic sample