# Q74919489
**Wikidata**: [Q74919489](https://www.wikidata.org/wiki/Q74919489)  
**Source**: https://4ort.xyz/entity/q74919489


## References

1. SIMBAD
2. The Palomar-Green catalog of ultraviolet-excess stellar objects
3. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12
4. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission
5. The SDSS Photometric Catalog, Release 9
6. The USNO-B Catalog
7. Gaia Data Release 2