# Q89403522

> white dwarf in the constellation Boötes

**Wikidata**: [Q89403522](https://www.wikidata.org/wiki/Q89403522)  
**Source**: https://4ort.xyz/entity/q89403522


## References

1. SIMBAD
2. A detailed model atmosphere analysis of cool white dwarfs in the Sloan Digital Sky Survey
3. Physical properties of the current census of northern white dwarfs within 40 pc of the Sun
4. Toward a spectroscopic census of white dwarfs within 40 pc of the Sun
5. The USNO-B Catalog
6. The SDSS Photometric Catalog, Release 7
7. The SDSS Photometric Catalog, Release 9
8. Gaia Data Release 2
9. Ultracool white dwarfs and the age of the Galactic disc