Overview
Tycho Brahe was an Astronomer.
Other names
| Type | English | Chinese | Pinyin |
|---|---|---|---|
| Alternate name | Tycho |
Life and dates
Attested activity
- AD 1572 to AD 1601 第谷測三月食Strongly inferred · Draft History of Qing 47, passage 94
Origins and identity
- Westerner 西人Directly stated · Draft History of Qing 47, passages 94, 101
Career and standing
- astronomer 測天者Strongly inferred · Draft History of Qing 47, passages 94, 101
Learning and skills
- Skill lunar theory 月離遲疾 · Level renownedDirectly stated · Draft History of Qing 47, passages 94, 101
Events and relationships
- Divided the deferent radius into two thirds deferent and one third epicycle after observational checksAstronomical · InvestigatorDirectly stated · Draft History of Qing 47, passage 101
- Observed three lunar eclipses used to derive deferent radius and apogeeAstronomical · ObserverDirectly stated · Draft History of Qing 47, passages 94-99
- Placed a secondary deferent at the geocenter and added a secondary epicycleAstronomical · InvestigatorDirectly stated · Draft History of Qing 47, passage 107
Source notes
- The present calendar method follows Tycho's three-part division of the deferent radius, then revises his secondary-deferent placement.Directly stated · Draft History of Qing 47, passages 102, 108
References in the histories
No matching passages.