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" December 37 for the sake of convenience. This inclination is ever varying, as well from the effect of its mean diminution, as of the nutation of the earth's axis: it is an important element in deducing... "
An Introduction to the Elements of Practical Astronomy - Page 102
by James R. Christie - 1853 - 118 pages
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Time's Telescope for ... ; Or, A Complete Guide to the Almanack

Almanacs, English - 1817
...necessarily to cause a change in this obliquity ; and according to the actual disposition of this system, the inclination of the plane of the ecliptic to that of the equator ought to diminish by a quantity nearly equal to fifty seconds in a century, or about half a second...
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The Nautical Almanac and Astronomical Ephemeris for the Year ...

Ephemerides - 1833
...year are useful in many Astronomical calculations. Obliquity of the Ecliptic. (Page 266.) The apparent inclination of the plane of the Ecliptic to that of the Equator is here given for every 10th day of the year, and continued to January 6 of the following year, marked...
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The Nautical Almanac and Astronomical Ephemeris for the Year ...

Ephemerides - 1841
...year are useful in many Astronomical calculations. Obliquity of the Ecliptic. (Page 266.) The apparent inclination of the plane of the Ecliptic to that of the Equator ii here given for every 10th day of the year, and continued to January 6 of the following year, marked...
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The Nautical Almanac and Astronomical Ephemeris for the Year ...

Ephemerides - 1842
...year are useful in many Astronomical calculations. Obliquity of the Ecliptic. (Page 266.) The apparent inclination of the plane of the Ecliptic to that of the Equator is here given for every 10th day of the year, and continued to January 6 of the following year, marked...
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The Nautical Almanac and Astronomical Ephemeris for the Year ...

Ephemerides - 1843
...are useful in many As№ nominal calculations. Obliquity of the Ecliptic. (Page 266.) The apparent inclination of the plane of the Ecliptic to that of the Equator is to given for every 10th day of the year, and continued to January 6 of the <b!Ving year, marked...
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The United States' Almanac: Or Complete Ephemeris, for 1843-45

1844
...given m the Explanation of the Tables. See page 313. Obliquity of the Ecliptic. (Page 76.l The apparent inclination of the plane of the Ecliptic to that of the Equator is here given for every 10th day of the year, and continued to January 5 of the following year, marked...
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The United States' Almanac; Or Complete Ephemeris

Almanacs, American - 1844
...in the Explanation of the Tables. See page 313. Obliquity of the Ecliptic. (Page 76.) The apparent inclination of the plane of the Ecliptic to that of the Equator is here given for every 10th day of the year, and continued to January 5 of the following year, marked...
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Practical Astronomy and Geodesy: Including the Projections of the Sphere and ...

John Narrien - Geodesy - 1845 - 427 pages
...obtained for the noon of any day, the rules of spherical trigonometry enable the astronomer to compute the inclination of the plane of the ecliptic to that of the equator, or the obliquity of the ecliptic; for s'(fig. to art. 172.) being the place of the sun at the noon...
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The Nautical Almanac and Astronomical Ephemeris for the Year ...

Ephemerides - 1846
...year are useful in many Astronomical calculations. Obliquity of the Ecliptic. (Page 266.) The apparent inclination of the plane of the Ecliptic to that of the Equator is here given for every 10th day of the year, and continued to January 6 of the following year, marked...
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The Nautical Almanac and Astronomical Ephemeris for the Year ...

Ephemerides - 1850
...year are useful in many Astronomical calculations. Obliquity of the Ecliptic. (Page 242.) The apparent inclination of the plane of the Ecliptic to that of the Equator is given for every 10th day of the year, and continued to January 6 of the ing year, marked December...
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