What is WGS84?

What is WGS84?

Setup WGS84 is an Earth-centered, Earth-fixed terrestrial reference system and geodetic datum. WGS84 is based on a consistent set of constants and model parameters that describe the Earth’s size, shape, and gravity and geomagnetic fields.

What is the b parameter of WGS 84?

The b parameter is often rounded to 6,356,752.3 m in practical applications. Presently WGS 84 uses the 1996 Earth Gravitational Model (EGM96) geoid, revised in 2004.

What are the bounds and projected bounds of the WGS84?

WGS84 Bounds: -180.0000, -90.0000, 180.0000, 90.0000 Projected Bounds: -180.0000, -90.0000, 180.0000, 90.0000 Scope: Horizontal component of 3D system.

What is the size of the WGS 84 datum?

As of the latest revision, the WGS 84 datum surface is a pole-flattened (oblate) spheroid, with major (transverse) radius a = 6,378,137 m at the equator, and minor (conjugate) radius b = 6,356,752.314 245 m at the poles (a flattening of 21.384 685 755 km, or 1/298.257 223 563 ≈ 0.335% in relative terms).