Credit: ©The Royal Society
    Image number: RS.12579

    Account of a comet

    Date
    1781
    Creator
    William Herschel (1738 - 1822, German-British) , Astronomer
    Object type
    Archive reference number
    Material
    Dimensions
    height (drawing): 137mm
    width (drawing): 117mm
    Subject
    Content object
    space
       > star
    space
       > comet
    space
       > Solar system
          > planet
             > Uranus
    Description
    Chart tracing the path of a comet using fixed stars, observed by eye.

    Figure 7 from the paper Account of a comet by William Herschel, 1781. Printed in the Philosophical Transactions of the Royal Society, volume 71, 492-501, 1781.

    Accompanying text in the paper reads ‘This evening at 8h 15’ the comet was a little above the line drawn from [η to Θ?] in figure 7. This figure is only delineated by the eye, so that no very great exactness in the distance of the stars is to be expected; but I shall take the first opportunity of measuring their respective situations by the micrometer.'

    William Herschel was the first to discover an entirely new planet, Uranus, using a telescope. He initially believed that the object was a comet but further evidence convinced him that this must be a planetary body. The discovery was truly sensational and made Herschel internationally famous. He named the new world Georgium Sidus, after his patron King George III.

    William Herschel (1738-1822) was a British astronomer, he was elected a Fellow of the Royal Society in 1781.
    Associated place
    <The World>
       > Europe
          > United Kingdom
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