| Description: The positive_longitude_direction element identifies the direction of longitude (e.g. EAST, WEST) for a planet. The IAU definition for direction of positive longitude is adopted. Typically, for planets with prograde rotations, positive longitude direction is to the WEST. For planets with retrograde rotations, positive longitude direction is to the EAST. Note: The positive_longitude_direction keyword should be used for planetographic systems, but not for planetocentric." |
| Namespace Id: galileo | Steward: sbn | Class Name: Geometry | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: SHORT_STRING |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | East | For planets with retrograde rotations, positive longitude direction is to the EAST |
| | West | For planets with prograde rotations, positive longitude direction is to the WEST. |