TABLE OF CONTENTS The following table gives the values of some frequently used constants.
| Symbol | Value | Units | Explanation |
|---|---|---|---|
| a | 6,378,137.000 | m | Semimajor axis of the WGS-84 ellipsoid |
| b | 6,356,752.314 | m | Semiminor axis of the WGS-84 ellipsoid |
| f | 1/298.257 | - | Flattening ( WGS-84, 1987) |
| g o | 9.80665 | m/sec 2 | Gravitational acceleration at sea level |
| ? | 3.986030 10 14 | m 3/ sec 2 | Earth gravitational constant |
| l c | 3.2808400 | ft/m | Length conversion |
| m c | 2.2046226 | lb/kg | Mass conversion |
| R E | ? ?/g o | m | Earth radius |
| T E | 86164.09886 | sec | Length of a sidereal day |
| c o | 1116.4(1/ lc) | m/sec | Sea-level atmospheric sound speed |
| p o | 2116.2( g o l 2 c /m c) | N/m 2 | Sea-level atmospheric pressure |
| ? o | 1.224949119 | kg/m 3 | Sea-level atmospheric density |
| ? | 3.14159256 | Mathematical constant | |
| ? | 2 ?/ T E | rad/sec | Earth sidereal rotation rate |
| ? E | 7.292115 10 ?5 | rad/sec | Angular velocity of the Earth |
| 6076.10 | ft/nm | Number of feet per nautical mile |
