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Compute lat/lon given radial and distance from a known point. Enter lat/lon of initial point, true course and distance. Select distance units and earth model and click "compute". Lat/lons may be entered in DD.DD, DD:MM.MM or DD:MM:SS.SS formats. Note that the starting point cannot be a pole.
- Ed Williams' Aviation Page
Ed Williams' Aviation page. My 182 . My aviation formulary...
- Ed Williams' Aviation Page
Distance Output Earth model: Spherical (1'=1nm) WGS84/NAD83/GRS80 Clarke (1866)/NAD27 International Krasovsky Bessel (1841) WGS72 WGS66 FAI sphere User defined
18 sty 2024 · In our great circle calculator, we went for the WGS 84: a widespread model used even by GPS satellites. Here are the numbers: a = 6378137.8 m. a = 6 378 137.8\ \mathrm {m} a = 6378137.8 m; b ≈ 6356752.314140 m. b \approx 6 356 752.314140\ \mathrm {m} b ≈ 6356752.314140 m; and. f = 298.257223563.
The Great Circle Mapper Draw you flight path on a map and calculate the great circle distance in nautical miles and kilometers. Get estimated flight time by choosing an aircraft type or entering the cruising speed.Click in the large textfield above to enter all the airports of your flight route!
Calculate the great circle distance between two points; Calculate the great circle distance between two addresses; Draw a direct route between two airports, or multiple airport pairs; Draw range rings (concentric circles) around a point; Calculate coordinates at a given bearing and distance
Ed Williams' Aviation page. My 182 . My aviation formulary contains a fairly complete collection of great circle and rhumb line navigation formulae. It also contains standard atmosphere properties and E6B functions. A pure Ascii version is available for ftp download.Some of the functions have been programmed into a Javascript on-line calculator, some into an Excel spreadsheet.
The GC distance is X nautical miles as the sum of the rhumb lines (RLs). Vertex. Latitude. Longitude. The Vertex is on/outside the track. The Vertex distance is X nautical miles. Courses (GC) Great Circle Theoretical Departure Course. Great Circle Theoretical Arrival Course.
