# Ernst Hartwig

> German astronomer (1851-1923)

**Wikidata**: [Q29061](https://www.wikidata.org/wiki/Q29061)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ernst_Hartwig)  
**Source**: https://4ort.xyz/entity/ernst-hartwig


## References

1. Mathematics Genealogy Project
2. BnF authorities
3. Virtual International Authority File
4. CiNii Research
5. [Source](https://kalliope-verbund.info/DE-611-BF-109191)
6. Integrated Authority File
7. SNAC
8. Brockhaus Enzyklopädie
9. Freebase Data Dumps. 2013