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Vénus - 1769 - Norriton (aujourdhui Norristown) , Pennsylvanie, Etats-Unis - David Rittenhouse (1732-1796) - nationalité américaine
Account of the Transit of Venus over the Sun's Disk, as observed at Norriton, in the County of Philadelphia, and Province of Pennsylvania, June 3, 1769. By William Smith, D.D. Provost of the College of Philadelphia ; John Lukens, Esquire, Surveyor-General of Pennsylvania ; David Rittenhouse, A. M. of Norriton ; and John Sellers, Esquire, one of the Representatives in Assembly for Chester County ; the Committee appointed for that Observation, by the American Philosophical Society, held at Philadelphia, for promoting useful Knowledge. Communicated to the said Society, in Behalf, and by Direction, of the Committee, by Doctor Smith ; and to the Royal Society of London, by Nevil Maskeline, B.D. Astronomer Royal. Les instants sont donnés p. 318-320 ; le 2e contact interne eut lieu après le coucher du Soleil ; p. 320 figurent les observations des satellites de Jupiter afin de déterminer la longitude du lieu, ainsi que la conclusion sur les difficultés liées aux erreurs des Tables des satellites ; p. 321, Rittenhouse donne la description d'un schéma des prévisions de ce passage, dessiné à l'échelle, en supposant la parallaxe solaire égale à 8,65" ; l'instant du minimum géocentrique déduit (p. 324) est correct à moins de 30 s près. Philosophical Transactions Giving Some Account of the Present Undertakings, Studies, and Labours, of the Ingenious, in Many Considerable Parts of the World, vol. LIX, for the Year 1769, 1770, p. 289-326. Texte imprimé en anglais. © Reproduced by courtesy of the Director and Librarian, the John Rylands University Library of Manchester.
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