# Q81918699

> white dwarf in the constellation Ursa Major

**Wikidata**: [Q81918699](https://www.wikidata.org/wiki/Q81918699)  
**Source**: https://4ort.xyz/entity/q81918699


## References

1. SIMBAD
2. Spectroscopy of stellar-like objects contained in the second Byurakan survey. I
3. Spectral classification of stars in the Second Byurakan Sky Survey. I
4. Gaia Data Release 2
5. Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample
6. Exploring the variable sky with LINEAR. III. Classification of periodic light curves
7. Exploring the variable sky with LINEAR. II. Halo structure and substructure traced by RR Lyrae stars to 30 kpc
8. The Pan-STARRS release 1 (PS1) Survey - DR1
9. The USNO-B Catalog
10. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
11. The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey
12. Newly discovered RR Lyrae stars in the SDSS-Pan-STARRS1-Catalina footprint