Astronomia Britannica exhibiting the doctrine of the sphere, and theory of the planets decimally by trigonometry, and by tables : fitted for the meridian of London ... / by John Newton ...

About this Item

Title
Astronomia Britannica exhibiting the doctrine of the sphere, and theory of the planets decimally by trigonometry, and by tables : fitted for the meridian of London ... / by John Newton ...
Author
Newton, John, 1622-1678.
Publication
London :: Printed for the author by R. and W. Leybourn, and are to be sold by Thomas Piercepoint ...,
1657.
Rights/Permissions

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Subject terms
Astronomy -- Early works to 1800.
Planetary theory -- Early works to 1800.
Astronomy -- Mathematics -- Early works to 1800.
Link to this Item
http://name.umdl.umich.edu/A52255.0001.001
Cite this Item
"Astronomia Britannica exhibiting the doctrine of the sphere, and theory of the planets decimally by trigonometry, and by tables : fitted for the meridian of London ... / by John Newton ..." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A52255.0001.001. University of Michigan Library Digital Collections. Accessed April 27, 2025.

Pages

Example.
The Suns place
♈ 19. 246
The Suns Right Ascension
17. 749
Time in Degrees
329. 391
Right Ascension of Midheaven
347. 140
Midheaven
♓ 16. 022
Meridian angle
67, 078
Declination of Midheaven
5. 533
Altitude of the Equator at London
38. 467
Altitude of Midheaven
32. 834

2 The angle of the Ecliptique and Horizon, or altitude of the Nona∣gesime degree, and his distance from the Midheaven is thus found, by the 17 Chapter of the first part.

As the Radius

To the sine of the Meridian angle67. 079. 9642509
So is Cosine of the Altitude of M C32. 839. 9244255
To the Cosine of the Angle, &c.39. 309. 8886764

Then as Radius

To the Cosine of the Meridian angle67. 079. 5906259
So is cotang. of the altitude of the M. C.32. 8310. 1903074
To the tang. of the distance of the M. C. from the Nonagesime degree16. 029. 7809333
This M C falling betweene Capricorn and Cancer this distance is to be added to the Midheaven ♓ 16. 02
And the Nonagesime degree will be in ♈ 17. 14

Page 161

3 Find the Node Ascendent and Subtract it from the Nonagesime de∣gree, with the remainder enter the Table of the Moones latitude, which if North adde to the angle of the Ecliptique and Horizon; if South sub∣tract it from it, so have you the altitude of the Nonagesime degree of the Moones orbe.

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