# Q88910728
**Wikidata**: [Q88910728](https://www.wikidata.org/wiki/Q88910728)  
**Source**: https://4ort.xyz/entity/q88910728


## References

1. SIMBAD
2. Stellar pulsations and period changes in the SX Phoenicis star XX Cygni
3. Automated variable star classification using the Northern Sky Variability Survey
4. The Tycho-2 catalogue of the 2.5 million brightest stars
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Data Release 2
7. Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations
8. Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue
9. Radial velocities of 67 variable stars of the RR Lyrae type
10. A revised catalogue of δ Sct stars