[OpenLayers-Users] EPSG:900913 or SR-ORG:6 or EPSG:3785?

[Stefan Keller]

Hi,

I'm confused about the 'right' coordinate reference system while
having to decide with which srid to take on a geometry (PostGIS).

When looking at
http://dev.openlayers.org/releases/OpenLayers-2.10/doc/apidocs/files/OpenLayers/Layer/SphericalMercator-js.html
it says "Transforms from EPSG:4326 to EPSG:900913 and from EPSG:900913
to EPSG:4326 are set by this class."

* When looking up EPSG:900913 on spatialreference.org it finds nothing.
* There's a link in the doc. to
http://spatialreference.org/ref/sr-org/google-projection/ which
actually indicates SR-ORG:6 (I expected EPSG:900913)
* I read about another EPSG:3785
(http://spatialreference.org/ref/epsg/3785/) which says "Popular
Visualisation CRS / Mercator"

1. Is EPSG:900913 really the one used by Google Maps API and is it up-to-date?
2. Should someone update spatialreference.org with EPSG:900913 (or is
this a synonym of/equivalent to EPSG:3785 and SR-ORG:6)?
3. As of now, the doc. shoud explain why
http://spatialreference.org/ref/sr-org/google-projection/ whows
SR-ORG:6 and not EPSG:900913!

Yours, S.