144 25 295244 E. The SRID is the Spatial Reference Identifier. Sin rad_lat2 rad_lat120 2.
If youre using latitude and longitude from or along with something like Google Maps 4326 is the format thats common.
Nautical Miles ACOS sin Lat_place_1PI 180sin Lat_place_2PI 180. However since SQL and C both have built-in functions to calculate the distance I would recommend using them. -- -- This routine calculates the distance between two points given the -- latitudelongitude of those points. It is being used to calculate -- the distance between two locations using GeoDataSource TM products -- -- Calculate distance between two points lat1lon1 and lat2lon2 -- Uses radius of earth in kilometers or miles as an argurments -- -- Typical radius.