Tool to find the point on the other side of the Earth (Antipodal Coordinates). Two points are said to the antipodes if they are diametrically opposite on a sphere.
Antipodal Coordinates - dCode
Tag(s) : Geography
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Antipodal Coordinates
Antipode Calculator
Tool to find the point on the other side of the Earth (Antipodal Coordinates). Two points are said to the antipodes if they are diametrically opposite on a sphere.
Answers to Questions
What is an antipodal point?
Two points are called antipodal if they are at two opposite points on a circle or a sphere. They are also said to be diametrically opposed or that they are the most distant points of each other on a spheroid.
Example: On Earth, the north pole and the south pole are antipodes.
Example: The antipodes of France is near New-Zealand.
The Earth is assimilated to a sphere, but in practice a more accurate model would be a spheroid (normal ellipsoid) or a geoid.
How to calculate antipode?
From the coordinates on a sphere, take the opposite value of the latitude (which is to put or remove a minus sign -), and remove or add 180 to the longitude (to keep it in the interval [-180; +180]) for GPS coordinates.
Example: The $ -12.345, 67.890 $ coordinates have for antipode $ 12.345, -112.11 $
From 3D Cartesian coordinates, take the opposite of each component (x, y, z) ie (-x, -y, -z)
Source code
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