# Q89143970

> white dwarf in the constellation Hercules

**Wikidata**: [Q89143970](https://www.wikidata.org/wiki/Q89143970)  
**Source**: https://4ort.xyz/entity/q89143970


## References

1. SIMBAD
2. SDSS DR7 white dwarf catalog
3. The USNO-B Catalog
4. The Sixth Data Release of the Sloan Digital Sky Survey
5. The SDSS Photometric Catalog, Release 9
6. Ultracool white dwarfs and the age of the Galactic disc