# X Crateris

> RR Lyrae variable star in the constellation Crater

**Wikidata**: [Q56303897](https://www.wikidata.org/wiki/Q56303897)  
**Source**: https://4ort.xyz/entity/x-crateris


## References

1. General Catalogue of Variable Stars
2. SIMBAD
3. Delta-S metallicities of 35 field RR Lyrae stars and the nature of BB Virginis and AR Herculis
4. Characteristics of bright AB-type RR Lyrae stars from the ASAS and WASP surveys
5. Evidence for a Milky way tidal stream reaching beyond 100 kpc
6. Automated variable star classification using the Northern Sky Variability Survey
7. Mid-infrared period-luminosity relations of RR Lyrae stars derived from the AllWISE Data Release
8. General Catalogue of Variable Stars, 3rd ed.
9. Gaia Data Release 2
10. The Tycho-2 catalogue of the 2.5 million brightest stars
11. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
12. Gaia Early Data Release 3
13. On the Use of Field RR Lyrae as Galactic Probes. III. The α-element Abundances