# PSR B1937+21 b

> unconfirmed exoplanet in the constellation Vulpecula

**Wikidata**: [Q113503248](https://www.wikidata.org/wiki/Q113503248)  
**Source**: https://4ort.xyz/entity/psr-b1937-21-b


## References

1. Extrasolar Planets Encyclopaedia
2. The 31-year Rotation History of the Millisecond Pulsar J1939+2134 (B1937+21)