| Description: The start_subspacecraft_longitude attribute identifies the value of the subspacecraft longitude at the beginning of the observation (geometry_start_time_utc). | 
| Namespace Id: geom | Steward: geo | Class Name: Surface_Geometry_Start_Stop | Type: ASCII_Real | 
| Minimum Value: 0 | Maximum Value: 360 | Minimum Characters: None | Maximum Characters: None | 
| Unit of Measure Type: Units_of_Angle | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: REAL | 
| Status: Active | Nillable: false | Pattern: None | 
| Permissible Value(s) | No Values |  |