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The Royal Society: Science in the Making

Letter, from de Cocherel to Henry Oldenburg

Reference number: EL/C1/91

Date: 15 October 1669

Description

Autograph letter
Containing de Cocherel's friend's method for determining longitude by observing the motion of the moon with the sun to find out when it will touch the meridian
De Cocherel provides a table for when the moon will reach the meridian of Paris during November 1669

Reference number
EL/C1/91
Earliest possible date
15 October 1669
Page extent
4 pages
Format
Manuscript
Also available on Early Modern Letters Online
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Citation

Letter, from de Cocherel to Henry Oldenburg, 15 October 1669, EL/C1/91, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/el_c1_91/letter-from-de-cocherel-to-henry-oldenburg, accessed on 18 July 2026

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https://makingscience.royalsociety.org/items/el_c1_91/letter-from-de-cocherel-to-henry-oldenburg

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  • Early Letters

    The archival collection known as 'Early Letters' is composed of original manuscript letters sent to, or collected by, the Royal Society from English and foreign correspondents.

    Dates: 1613 - 1740

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