# B-V colour

> difference between B and V magnitudes of an astronomical object

**Wikidata**: [Q2668836](https://www.wikidata.org/wiki/Q2668836)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/B−V_color)  
**Source**: https://4ort.xyz/entity/b-v-colour


## References

1. Freebase Data Dumps. 2013