# Q87904022
**Wikidata**: [Q87904022](https://www.wikidata.org/wiki/Q87904022)  
**Source**: https://4ort.xyz/entity/q87904022


## References

1. SIMBAD
2. Studies in galactic structure. II. Luminosity classification for 1270 blue giants stars
3. Photometric, polarization, and spectroscopic observations of O and B stars
4. A spectroscopic and photometric study of the Be stars
5. The Uppsala spectral classification
6. Photoelectric measures of the 4430 A diffuse interstellar band
7. A catalogue of Be stars
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. Gaia Data Release 2
10. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
11. Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue
12. The revision of the general catalogue of radial velocities