Tropic of Capricorn for rainfed agriculture. Starting at the Prime Meridian and heading eastwards, the Tropic of Capricorn passes through 10 countries: The following cities and landmarks are either located near the Tropic of Capricorn, or the tropic passes through them. As the major portion of earth's land is located in the Northern Hemisphere there are only four countries entirely south of the Tropic of Capricorn (there are 74 countries entirely north of the Tropic of Cancer): Length of the Tropic on 11 June 2015, at 23°26′14″S is . Tropic of Capricorn The Tropic of Capricorn (or the Southern Tropic) is the circle
Earth's orbit actual orbit is less eccentric than pictured. Because of the axial tilt of the Earth in its orbit, the maximal intensity of Sun rays hits the Earth 23.4 degrees north of equator at the June Solstice (at the Tropic of Cancer), and 23.4 degrees south of equator at the December Solstice (at the Tropic of Capricorn). Mathematicians and astronomers (such as Laplace, Lagrange, Gauss, Poincaré, Kolmogorov, Vladimir Arnold, and Jürgen Moser) have searched for evidence for the stability of the planetary motions, and this quest led to many mathematical developments and several successive "proofs" of stability for the Solar System.