Statements (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:academic_journal
|
| gptkbp:author |
gptkb:Hipparchus
|
| gptkbp:dateWritten |
2nd century BCE
|
| gptkbp:historicalSignificance |
early scientific measurement of the year
|
| gptkbp:language |
gptkb:Ancient_Greek
|
| gptkbp:notableFor |
calculating the length of the tropical year
|
| gptkbp:topic |
gptkb:astronomy
gptkb:event |
| gptkbp:bfsParent |
gptkb:Hipparchus
|
| gptkbp:bfsLayer |
5
|
| https://www.w3.org/2000/01/rdf-schema#label |
On the Length of the Year
|