The elements of astronomy, physical and geometrical (1715)
Gregory, David, 1659-1708, Halley, Edmond, 1656-1742. Synopsis of the astronomy of comets, Adams, John, 1735-1826, former owner. BRL, Boston Public Library (John Adams Library) BRL · London : Printed for J. Nicholson ... and sold by J. Morphew ... · leaf 521
manner, as it hap-pens here : Indeed the inveftigation of any Pro-blem by the help of Euclids Data^ is an univerfalmethod of determining it, and very ufual with^he Ancients. Proposition XXXIII. Flue Centric flaces ofaPlanet and the Dijiances from.the Sun being giuen, to find its Orbit.In the… … Book III. of A sT R o N o M y; 445 their Motions demonftrated in Book is Namely,that the Orbit of any Planet is an Ellipfe, one ofwhofe Foci is the Sun at reft, and that a Planetdefcribes it after fuch a manner, as that its Area sor Sedors contained between right lines drawnto the Sun, and the Arcs…
Astronomy
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