An Efficient Computation of Effective Ground Range Using an Oblate Earth Model

Table 3

Comparison of lengths of minor axis using oblate spheroid Earth model from a launch city A (−100°, 30°).

(Longitude, latitude)	Minor axis length; ND method (km)	Minor axis length; MF method (km)	Difference (m)
(60°, −30°)	6372.65	6372.61	32.97
(30°, −30°)	6371.94	6371.92	26.73
(75°, −30°)	6372.76	6372.64	122.35
(95°, −30°)	6372.7	6372.66	37.71
(10°, 25°)	6368.4	6368.3	96.41
(0°, 0°)	6372.65	6372.56	90.3
(−100°, −30°)	6356.75	6356.75	0