Jean-Philippe Loys de Cheseaux
Jean-Philippe Loys de Cheseaux | |
|---|---|
 Portrait by Jean-Pierre Henchoz, 1746 | |
| Born | 4 May 1718 |
| Died | 30 November 1751 (aged 33) |
| Nationality | Swiss |
| Scientific career | |
| Fields | Astronomy |
Jean-Philippe Loys de Cheseaux (French pronunciation: [ʒɑ̃ filip lois də ʃezo]; 4 May 1718 – 30 November 1751) was a Swiss astronomer.
Biography
Loys de Cheseaux was born on 4 May 1718 in
banneret, and Estienne-Judith de Crousaz.[1] His brother was Charles-Louis Loys de Cheseaux.[1] He was educated by his maternal grandfather, the mathematician and philosopher Jean-Pierre de Crousaz, and wrote his first essays, under the title Essais de Physique, in 1735, aged 17.[1]
In 1736, Loys de Cheseaux installed an observatory in his father's lands in
After his discovery of C/1743 (along with
Le Gentil in 1759, but only made public in 1892 by Guillaume Bigourdan
.
From 1747, Loys de Cheseaux was a
St. Petersburg, Stockholm, as well as the Academy of Sciences of Paris and the Royal Society of London.[1][2] He was offered the post of director of the St. Petersburg observatory, but declined the invitation.[2] In 1751, Loys de Cheseaux travalled to Paris and was presented to the Academy of Sciences.[2] There he died, after a short illness, on 30 November 1751, aged 33.[2]
In addition to astronomy, Loys de Cheseaux researched
equinoxes in Jerusalem at the time of the Old Testament story. In his Dissertation Chronologique (1748), Loys de Cheseaux tried to establish the date of the eclipse known as "crucifixion darkness" in order to determine the date of the crucifixion of Jesus.[2]
References
- ^ a b c d e f Valérie Cossy: Jean-Philippe Loys de Cheseaux in German, French and Italian in the online Historical Dictionary of Switzerland.
- ^ ISBN 978-0387304007.
- ^ "Maik Meyer. Catalog of comet discoveries". Archived from the original on 16 July 2008. Retrieved 15 May 2008.
{{cite web}}: CS1 maint: bot: original URL status unknown (link)
Works
- Traité de la comete qui a paru en decembre 1743 et en janvier, fevrier et mars 1744 (in French). Lausanne: Marc Michel Bousquet & C. 1744.
- Remarques astronomiques sur le livre de Daniel (in French). Lausanne: Pierre Michel Lamy. 1777. Bibcode:1777rasl.book.....L.
External links
- Short biography at SEDS
- De Cheseaux's List of 21 "Nebulae" at SEDS
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