|  | This document is archived and information here might be outdated. Recommended version. | 
Provides access to the authority-related metadata for a spatial reference object.
This interface is new at ArcGIS 9.3.
| Name | Description | |
|---|---|---|
|  | AuthorityName | The name of the defining authority for this object. | 
|  | Code | The code identifying this object relative to its authority. For the EPSG authority, this will initially be the WKID (factory code). | 
|  | Define | Defines the authority-related metadata properties for this spatial reference object. | 
|  | Version | The version of this spatial reference object. | 
| Classes | Description | 
|---|---|
| AbridgedMolodenskyTransformation | Creates an Abridged Molodensky transformation. | 
| AngularUnit | Creates a angular unit of measure. | 
| CoordinateFrameTransformation | Creates a Coordinate Frame transformation. | 
| Datum | Creates a datum. | 
| GeocentricTranslation | Creates a geocentric translation. | 
| GEOCONTransformation | Creates a GEOCON-based transformation. | 
| Geographic2DOffsetTransformation | Creates a geographic 2D offset transformation. | 
| GeographicCoordinateSystem | Creates a geographic coordinate system. | 
| GeoTransformation | Generic geotransformation class, holds either a WKT (string) or a WKID (factory code). | 
| HARNTransformation | Creates a HARN-based transformation. | 
| LinearUnit | Creates a linear unit of measure. | 
| LongitudeRotationTransformation | Creates a longitude rotation transformation. | 
| MolodenskyBadekasTransformation | Creates a Molodensky-Badekas transformation. | 
| MolodenskyTransformation | Creates a Molodensky transformation. | 
| NADCONTransformation | Creates a NADCON-based transformation. | 
| NTv2Transformation | Creates a NTv2-based transformation. | 
| NullTransformation | Creates a null geographic transformation. | 
| Parameter | Creates a parameter. | 
| PositionVectorTransformation | Creates a Position Vector transformation. | 
| PrimeMeridian | Creates a prime meridian. | 
| ProjectedCoordinateSystem | Creates a projected coordinate system. | 
| Projection | Creates a map projection. | 
| Spheroid | Creates a spheroid. | 
| UnitChangeTransformation | Creates a unit change transformation. | 
| VerticalCoordinateSystem | Creates a vertical coordinate system. | 
| VerticalDatum | Creates a vertical datum. |