In old verion of ArcGIS Desktop, I could manually define Spatial Domains (or X/Y Domains) when I created a Dataset using ArcCatalog. Now I am using V10. When I created a dataset, I chosen WGS_1984_Web_Mercator_Auxiliary_Sphere. Then the X/Y domain is automatically defined. For example,
Min X = -20037700
Max X = 900699887774.099
Min Y = -30241100
Max Y = 900689684374.099
The unit is meter. It looks that the values of Max X and Max Y do not make sense. Max X = 900,699,887 km, which is 225 times longer than the earth equator's perimeter (about 40,000 km).
Can anyone explain this issue? Besides, is there a way to manually define the X/Y domain values using V10? Thanks.