# how many latitudes are there

But longitude lines run north-south. The conventional notation is given in Snyder (page 15):[9], For the normal Mercator projection (on the ellipsoid) this function defines the spacing of the parallels: if the length of the equator on the projection is E (units of length or pixels) then the distance, y, of a parallel of latitude φ from the equator is. These geocentric ellipsoids are usually within 100 m (330 ft) of the geoid. The graticule is formed by the lines of constant latitude and constant longitude, which are constructed with reference to the rotation axis of the Earth. The distance from the equator to the pole is. Lines of latitude are called parallels and in total there are 180 degrees of latitude. The Equator passes through 14 countries, including Uganda, Kenya, Somalia, Indonesia, Ecuador, Colombia, and Brazil.

The examples below show the named parallels (as red lines) on the commonly used Mercator projection and the Transverse Mercator projection.

The latitude of a point on the actual surface is that of the corresponding point on the reference surface, the correspondence being along the normal to the reference surface which passes through the point on the physical surface. For more U.S. locations including cities, towns, parks and more, use the Find Latitude and Longitude tool.See also Latitude and Longitude of … This figure is provided by. There are 360° of longitude (180° E ↔ 180° W) and 180° of latitude (90° N ↔ 90° S). On the Equinoxes – September and March – the Sun is directly overhead the Equator, resulting in almost exactly 12 hour days and 12 hour nights. θ The shape of an ellipsoid of revolution is determined by the shape of the ellipse which is rotated about its minor (shorter) axis. Since there are many different reference ellipsoids, the precise latitude of a feature on the surface is not unique: this is stressed in the ISO standard which states that "without the full specification of the coordinate reference system, coordinates (that is latitude and longitude) are ambiguous at best and meaningless at worst".

This line of latitude is the northern boundary of the area referred to as the tropics.

The positions of these latitudes are determined by the Earth's axial tilt. The rectifying latitude, μ, is the meridian distance scaled so that its value at the poles is equal to 90 degrees or π/2 radians: where the meridian distance from the equator to a latitude φ is (see Meridian arc), and the length of the meridian quadrant from the equator to the pole (the polar distance) is, Using the rectifying latitude to define a latitude on a sphere of radius. What is the rising action of faith love and dr lazaro? There are total 181 latitude. The equator lies halfway between the North Pole and the South Pole. The Arctic Circle is the latitude 66° 34′ North. No higher accuracy is appropriate for R since higher-precision results necessitate an ellipsoid model.

In pre-satellite days they were devised to give a good fit to the geoid over the limited area of a survey but, with the advent of GPS, it has become natural to use reference ellipsoids (such as WGS84) with centre at the centre of mass of the Earth and minor axis aligned to the rotation axis of the Earth. How long will the footprints on the moon last? A Great Circle is any circle that is formed by a plane that passes through the center of the Earth. R is equal to 6,371 km or 3,959 miles. two different latitu.

Astronomical latitude (Φ) is the angle between the equatorial plane and the true vertical direction at a point on the surface.