Credit: ©The Royal Society
    Image number: RS.14894

    Path of comets

    Date
    21 January 1665
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    LBC
    Manuscript page number
    vol1 p258
    Material
    Dimensions
    height (page): 300mm
    width (page): 180mm
    Subject
    Content object
    space
       > comet
    Description
    A figure found among the papers of Jeremiah Horrocks (?1617-1641) illustrating his study of a comet's path, which appears elliptical. This is the figure enclosed with the original letter (EL/W1/14) sent by John Wallis to Henry Oldenburg dated 21 January 1665, where Wallis points out that Johannes Hevelius's hypothesis about the motion of comets is not new. The letter was read to the Royal Society on 25 January 1665.

    This is copied from LBO/1/221a.
    Object history
    At the meeting of the Royal Society on 25 January 1665, ‘There was read a letter from Dr. Wallis to Mr. Oldenburg, dated at Oxford January 21, 1664/5, containing several observations of his upon the comet, and upon Mr. Hevelius’s and Mr. Horrox’s hypotheses concerning the nature of comets in general (Birch 2:11).
    Related fellows
    John Wallis (1650, British) , Mathematician
    Johannes Hevelius (1611 - 1687, German/Polish) , Astronomer
    Associated place
    <The World>
       > Europe
          > United Kingdom
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