The list of spheroids available is somewhat dynamic. It may not contain exactly the ones listed below. To determine the current list of possible spheroids, simply type in:
Spheroid: Semi-major axis Eccentricity sqrd (e), Commonly used for: (Equatorial Radius) Flattening (f), (a): or Polar Radius (b): _ airy a=6377563.396 e=.006670540 australian a=6378160 f=1/298.25 Australia bessel a=6377397.155 e=.006674372 Japan clark66 a=6378206.4 b=6356583.8 N. America everest a=6377276.345 e=.0066378466 India, Burma grs80 a=6378137 f=1/298.257 hayford a=6378388 f=1/297 international a=6378388 f=1/297 Europe krasovsky a=6378245 f=1/298.3 wgs66 a=6378145 f=1/298.25 worldwide coverage wgs72 a=6378135 f=1/298.26 worldwide coverage wgs84 a=6378137 f=1/298.257223563 worldwide coverage
WINDOW 4928000.00N 609000.00E ZONE 13 4914000.00S 590000.00W 44.30.06N 44.29.57N 103.52.04W 103.37.44W 44.22.32N 44.22.23N 103.52.13W 103.37.55W At northern edge 1 arc-second longitude=22.088500m At southern edge 1 arc-second longitude=22.135998m At western edge 1 arc-second latitude=30.860285m At eastern edge 1 arc-second latitude=30.863082mThe values for the geographic coordinates are rounded to the nearest second in this example. They would be more precise in the actual output that is printed on the screen.