PhysicsCircus

Equatorial Radius: 6378.140 kilometers Polar Radius: 6356.755 kilometers Mean Radius: 6371.004 kilometers Latitude: 1° of latitude = 111.133 - 0.559 cosine (2 x latitude) kilometres The following table shows the distance between 1° (degree), 1' (minute) and 1" (second) of latitude as the latitude changes.