# Q93426990
**Wikidata**: [Q93426990](https://www.wikidata.org/wiki/Q93426990)  
**Source**: https://4ort.xyz/entity/q93426990


## References

1. SIMBAD
2. Radial velocities and spectral characteristics of the Population II Cepheids M 5 No 42, M 5 No 84 and TW Capricorni
3. Spectra of type II cepheid candidates and related stars
4. The ASAS-SN Catalog of Variable Stars II: Uniform Classification of 412,000 Known Variables
5. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
6. Gaia Data Release 2
7. Fourth USNO CCD Astrograph Catalog
8. Gaia Early Data Release 3
9. Type II Cepheids: evidence for Na-O anticorrelation for BL Her type stars?