Overview
Hipparchus was an Astronomer and Scholar.
Life and dates
Attested activity
- BC 147 to BC 127 依巴谷朔策定數Strongly inferred · Draft History of Qing 47, passage 121
- BC 147 to BC 127 依西人依巴谷法Strongly inferred · Draft History of Qing 47, passage 85
Origins and identity
- Westerner 西人Directly stated · Draft History of Qing 47, passages 85, 121
Career and standing
- astronomer 測天者Strongly inferred · Draft History of Qing 47, passages 121, 127
- astronomer 西人Strongly inferred · Draft History of Qing 47, passage 85
Places and affiliations
- Polity Hellenistic Greece 希臘 · Relation Associated withStrongly inferred · Draft History of Qing 47, passage 85
Works and attributed material
- method for lunar mean motion from commensurate eclipse cycles 依巴谷法Relation AuthorDirectly stated · Draft History of Qing 47, passages 85-92
- 126,007 days 4 quarters as the commensurate interval of the two lunar-eclipse cycles, after which syzygies and anomalistic revolutions return to the start 一十二萬六千零七日四刻為兩月食各率齊同之距，會望轉終，皆復其始Method · Author · ParaphrasedDirectly stated · Draft History of Qing 47, passage 85
Events and relationships
- Determined commensurate lunar eclipse intervalScholarly · Formulator · Outcome 4,267 syzygies and 4,573 anomalistic revolutions in 126,007 days 4 quarters 會望者四千二百六十七，轉終者四千五百七十三Directly stated · Draft History of Qing 47, passages 85-86
- His adopted daily motion relative to the node was retained after a one micro unit discrepancy from two later eclipsesAstronomical · AuthorityDirectly stated · Draft History of Qing 47, passage 127
- Supplied synodic constant 5458 and nodal revolution constant 5923 used to count nodal revolutions between two lunar eclipsesAstronomical · AuthorityDirectly stated · Draft History of Qing 47, passage 121
Source notes
- Historicity historicalDirectly stated · Draft History of Qing 47, passage 85
- The Qing calculation still uses Hipparchus's nodal-motion figure despite a 1‴ difference from the Shunzhi–Kangxi eclipse pair.Directly stated · Draft History of Qing 47, passage 127
References in the histories
No matching passages.