Cleostratos of Tenedos
Cleostratos of Tenedos ( ancient Greek Κλεόστρατος ὅ Τενέδιος Kleóstratos ho Tenédios ) was an ancient Greek astronomer and poet.
Life
The dates of life of Cleostratos are unknown, but it is assumed that he could have been a pupil of Thales , since he died on Tenedos , the home of Cleostratos. Thus it would be in the 6th century BC. To date. But not only the dates of life are uncertain, his astronomical achievements are also controversial and only vaguely passed on.
plant
Cleostratos wrote an astronomical poem, the Astronomia , of which only two verses have survived:
- “When Bootes spends 83 days in the night sky after its late sunset, then the beginning of the Scorpio sets at dawn, along with the first stars of the boat."
Other ancient authors report that he was the first to recognize the signs of the zodiac on the ecliptic , Aries and Sagittarius first . He was also the first to recognize the two asterisks called Haedi in the constellation Fuhrmann .
Censorinus also reports that Cleostrates and not Eudoxus of Knidos introduced the octaedris, the eight-year calendar cycle. He is also said to have observed the solstices on Mount Ida.
reception
The moon crater Cleostratus is named after the ancient astronomer.
literature
- Richard Goulet: Cléostrate de Ténédos. In: Richard Goulet (ed.): Dictionnaire des philosophes antiques. Volume 2, CNRS Éditions, Paris 1994, ISBN 2-271-05195-9 , p. 442
- Bartel Leendert van der Waerden : The astronomy of the Greeks . Scientific Book Society, Darmstadt 1988, ISBN 3-534-03070-2
Remarks
- ↑ Here added after Franz Boll .
| personal data | |
|---|---|
| SURNAME | Cleostratos of Tenedos |
| BRIEF DESCRIPTION | ancient Greek astronomer |
| DATE OF BIRTH | between 6th century BC BC and 3rd century BC Chr. |
| DATE OF DEATH | between 6th century BC BC and 3rd century BC Chr. |