GREAT CIRCLE NAVIGATION: DISTANCE and COURSE

On Sphere and on WGS84 Ellipsoid (accuracy 1 millimetres)

Geographic Coordinates of ORIGIN

deg min sec or deg min.ddddd or deg.ddddddd
LATITUDE
Deg
  Min  Sec

LONGITUDE
Deg
  Min  Sec

    Geographic Coordinates of DESTINATION

deg min sec or deg min.ddddd or deg.ddddddd
LATITUDE
Deg
  Min  Sec

LONGITUDE
Deg
  Min  Sec


Click on Button:

Great Circle Spherical Distance from ORIGIN to DESTINATION is: km, or nautical miles
Great Circle Spherical initial Course from ORIGIN to DESTINATION is: degrees, or
Deg Min Sec
Vertex (the northest or the southest point of Great Circle):
LATITUDE: Deg  Min  Sec LONGITUDE: Deg  Min  Sec

WGS84 elliptic Distance from ORIGIN to DESTINATION is: km, or nautical miles
WGS84 elliptic initial Course, Bearing from ORIGIN to DESTINATION is: degrees, or
Deg Min Sec
WGS84 elliptic Final Course, Bearing from ORIGIN to DESTINATION is: Deg Min Sec
WGS84 elliptic initial Course, Bearing from DESTINATION to ORIGIN aka reverse course to ORIGIN is: degrees, or
Deg Min Sec

Course, Bearing = 0 or 360 is to the North Pole, not to the Magnetic North. East = 90 South = 180 West= 270

Mathematical background of Great Circle

Mathematical Background to Vincenty's elliptic solution

(Vincenty's iteration method gives 1 millimetre accuracy of distance)

Loxodrome (Mercator) navigation: Distance and Course from Origin to Destination

Navigation, Astronavigation, Positioning, Geodesy

Juhani Kaukoranta, Finland
 Email: juhani.kaukoranta@gmail.com
Homepage: http://jukaukor.mbnet.fi/