ソシゲネス


紀元67年にユリウス暦を
考案した天文学者です
ソシゲネス(答)
21%
Sosigenes

ソシゲネス(アレキサンドリアのソシゲネス:Sosigenes、紀元前1世紀頃)は、大プリニウスの『博物誌』に記述のある天文学者で、カエサルによるユリウス暦への改訂にエジプトの太陽暦を参考するように提議したとされる天文学者である。
ユリウス暦の改訂に助言したとされる天文学者には他にAcoreusがいる。大プリニウスの『博物誌』にはソシゲネスの水星の軌道についての研究についての記述があり、水星が太陽から22度以上離れないをことを知っていたとされる。
引用元:ソシゲネス – Wikipedia https://ja.wikipedia.org/wiki/%E3%82%BD%E3%82%B7%E3%82%B2%E3%83%8D%E3%82%B9

Sosigenes of Alexandria (Greek: Σωσιγένης) was a Greek astronomer who, according to Pliny the Elder, was consulted by Julius Caesar for the design of the Julian calendar.[1][2]

>Little is known about him apart from Pliny’s Natural History. Sosigenes appears in Book 18, 210-212:

“… There were three main schools, the Chaldaean, the Egyptian, and the Greek; and to these a fourth was added in our country by Caesar during his dictatorship, who with the assistance of the learned astronomer Sosigenes (Sosigene perito scientiae eius adhibito) brought the separate years back into conformity with the course of the sun.”
In Book 2, chapter 6, Sosigenes is credited with work on the orbit of Mercury:

“The star next to Venus is Mercury, by some called Apollo; it has a similar orbit, but is by no means similar in magnitude or power. It travels in a lower circle, with a revolution nine days quicker, shining sometimes before sunrise and sometimes after sunset, but according to Cidenas and Sosigenes never more than 22 degrees away from the sun.”[3]
引用元:Sosigenes of Alexandria – Wikipedia https://en.wikipedia.org/wiki/Sosigenes_of_Alexandria