Sources for 3rd body gravitation data.
| Member | Value | Description |
|---|---|---|
| eCBFile | 0 | Central body file (all bodies): gravitational value from editable central body file shipped with STK. |
| eJPLDE | 1 | JPL DE (Sun, Moon and planets): DE 405 ephemerides, covering a time span from 1960 to 2060. |
| eUserSpecified | 2 | User-specified: enter the value directly. |





