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• A compleat system of astronomy : In two volumes. Containing the description and use of the sector; the laws of spheric geometry; ... Also new tables of the motions of the planets, ... By Charles Leadbetter, teacher of the mathematicks
  by: Leadbetter, Charles
  Published: (1728)
• Astronomy : or, the true system of the planets demonstrated. Wherein are shewn by instrument, their anomalies, heliocentrick and geocentrick places both in longitude and latitude; their Aphelions, Perihelions, Retrogradations and Elongations, Parallaxes and Distances from the Sun and Earth: With the Method of Computing the Times when Venus and Mercury may be seen in the Sun's Disk. Also the Moon's Phases, and Eclipses of the Luminaries, for any time past, present, or to come. With proper Cuts to each Planet: By which any Person may in a few Hours, and with great Ease, attain to a perfect Knowledge of the Planetary, or Solar System. Likewise The Places of the Heavenly Bodies and Motion of the Earth are not only shewn, but plainly and succinctly demonstrated to the Meanest Capacity, by Short and Easie Rules and New Astronomical Tables. With the Places of 130 Principal Fixed Stars, 33 of which lye in the Moon's Way: Design'd as a Help towards discovering the Longitude at Sea. To which is prefix'd, an alphabetical catalogue of as many terms in astronomy as are most Useful, and necessary to be understood. A Work entirely New, and in a Method hitherto unattempted. By Charles Leadbetter, Teacher of the Mathematicks
  by: Leadbetter, Charles
  Published: (1727)
• A compleat system of astronomy : In two volumes. Containing, the description and use of the sector, the laws of spheric geometry; the projection of the sphere orthographically and stereographically upon the planes of the meridian, ecliptic and horizon; the doctrine of the sphere; and the eclipses of the Sun and Moon for thirty nine years. Together with all the precepts of calculation. Also new tables of the motions of the planets, fix'd stars, and the first satellite of Jupiter's declinations to every degree and minute of the ecliptic, to six degrees of N. and S. latitude; of right and oblique ascensions, and logistical logarithms. To the whole are prefix'd, astronomical definitions, for the benefit of young students. The second edition, with additions. By Charles Leadbettar, teacher of the Mathematics
  by: Leadbetter, Charles
  Published: (1742)
• Astronomy of the satellites of the Earth, Jupiter and Saturn : Grounded upon Sir Isaac Newton's Theory of the Earth's Satellite. The Theory explain'd, and made easy to the meanest Capacity, in calculating the true Place of the Moon: And freed from the Errors printed in the said Theory, by Dr. Gregory, Dr. Harris, and several other Authors for which now the Place of the Moon, and Eclipses of the Luminaries, are found to a very great Exactness. Also New Tables of the Motions of the Satellites of Jupiter and Saturn, (founded upon the Observations of Mr. Flamsteed, Mr. Cassini, Mr. Hugens, Dr. Halley and Mr. Pound,) from the Vernal Equinox: By which their Places and Positions, in respect of one another, may be exactly determined at any given Time. Adapted to the [illegible] of London. To which is added, A Problem to find the Latitude of the Place by the Altitude of the Sun, Moon, or Star, upon any Azimuth; being very useful for all Sea-Faring Men, as well as Gentlemen and others. By Charles Leadbetter, Teacher of the Mathematicks
  by: Leadbetter, Charles
  Published: (1729)
• The compendious astronomer : containing new and correct tables for computing in a concise manner, the places of the luminaries; Digested from Numbers Founded on The latest Observations; All the Tables hitherto published making the Apogé of the Sun about Seven Minutes too far. The Tables of the Moon are disposed according to Sir Isaac Newton's Theory, from whence each Equation may be taken out with the same Ease as that of the Sun's Centre, and consequently her Place be obtain'd in a Tenth Part of the Time of any other Method extant; with Remarks whereby the said Theory is made to correspond with Observations. The Young Arithmetician's and Historian's Perpetual and Universal Pocket-Chronologer, curiously engraven on a Copper-Plate, by which and a very easy Arithmetical Calculus, may be determined, on the aforesaid Principles, the Place of each Luminary to the like Exactness, as by the Tables, with the Solutions of various Problems both useful and necessary in Chronology, &c. To render this Treatise independant of any other, There is likewise introduced, the theory of decimal arithmetic, Both Terminate and Circulate; Together with their Demonstrations, which by the late ingenious Mr. Cunn, and other Authors, are omitted. By Charles Brent
  by: Brent, Charles
  Published: (1741)