EPSG:3841

PROJCS["Pulkovo_1942_83_3_degree_Gauss_Kruger_zone_6",GEOGCS["GCS_Pulkovo 1942(83)",DATUM["D_Pulkovo_1942_Adj_1983",SPHEROID["Krasovsky_1940",6378245,298.3]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",18],PARAMETER["scale_factor",1],PARAMETER["false_easting",6500000],PARAMETER["false_northing",0],UNIT["Meter",1]]

+proj=tmerc +lat_0=0 +lon_0=18 +k=1 +x_0=6500000 +y_0=0 +ellps=krass +towgs84=28,-121,-77,0,0,0,0 +units=m +no_defs 

proj4.defs("EPSG:3841","+proj=tmerc +lat_0=0 +lon_0=18 +k=1 +x_0=6500000 +y_0=0 +ellps=krass +towgs84=28,-121,-77,0,0,0,0 +units=m +no_defs");

<?xml version="1.0" encoding="UTF-8"?>
 <gml:ProjectedCRS xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="ogp-crs-3841">
   <gml:metaDataProperty>
      <epsg:CommonMetaData>
         <epsg:type>projected</epsg:type>
         <epsg:alias alias="Pulkovo 42(83) / 3GK zn6" code="5317" codeSpace="urn:ogc:def:naming-system:EPSG::7302" />
         <epsg:informationSource>OGP</epsg:informationSource>
         <epsg:revisionDate>2009-07-04</epsg:revisionDate>
         <epsg:changes>
            <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2009.053" />
         </epsg:changes>
         <epsg:show>true</epsg:show>
         <epsg:isDeprecated>false</epsg:isDeprecated>
      </epsg:CommonMetaData>
   </gml:metaDataProperty>
   <gml:identifier codeSpace="OGP">urn:ogc:def:crs:EPSG::3841</gml:identifier>
   <gml:name>Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 6</gml:name>
   <gml:remarks>Replaces Pulkovo 1942(58) / 3-degree Gauss-Kruger zone 6 (CRS code 3330).</gml:remarks>
   <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::3582" />
   <gml:scope>Military large scale (1/5000 and larger) topographic mapping.</gml:scope>
   <gml:conversion xlink:href="urn:ogc:def:coordinateOperation:EPSG::16266" />
   <gml:baseGeodeticCRS xlink:href="urn:ogc:def:crs:EPSG::4178" />
   <gml:cartesianCS xlink:href="urn:ogc:def:cs:EPSG::4530" />
</gml:ProjectedCRS>

<?xml version="1.0" encoding="UTF-8"?>
 <gml:ProjectedCRS gml:id="ogrcrs2843" xmlns:gml="http://www.opengis.net/gml/3.2">
  <gml:srsName>Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 6</gml:srsName>
  <gml:srsID>
    <gml:name gml:codeSpace="urn:ogc:def:crs:EPSG::">3841</gml:name>
  </gml:srsID>
  <gml:baseCRS>
    <gml:GeographicCRS gml:id="ogrcrs2844">
      <gml:srsName>Pulkovo 1942(83)</gml:srsName>
      <gml:srsID>
        <gml:name gml:codeSpace="urn:ogc:def:crs:EPSG::">4178</gml:name>
      </gml:srsID>
      <gml:usesEllipsoidalCS>
        <gml:EllipsoidalCS gml:id="ogrcrs2845">
          <gml:csName>ellipsoidal</gml:csName>
          <gml:csID>
            <gml:name gml:codeSpace="urn:ogc:def:cs:EPSG::">6402</gml:name>
          </gml:csID>
          <gml:usesAxis>
            <gml:CoordinateSystemAxis gml:id="ogrcrs2846" gml:uom="urn:ogc:def:uom:EPSG::9102">
              <gml:name>Geodetic latitude</gml:name>
              <gml:axisID>
                <gml:name gml:codeSpace="urn:ogc:def:axis:EPSG::">9901</gml:name>
              </gml:axisID>
              <gml:axisAbbrev>Lat</gml:axisAbbrev>
              <gml:axisDirection>north</gml:axisDirection>
            </gml:CoordinateSystemAxis>
          </gml:usesAxis>
          <gml:usesAxis>
            <gml:CoordinateSystemAxis gml:id="ogrcrs2847" gml:uom="urn:ogc:def:uom:EPSG::9102">
              <gml:name>Geodetic longitude</gml:name>
              <gml:axisID>
                <gml:name gml:codeSpace="urn:ogc:def:axis:EPSG::">9902</gml:name>
              </gml:axisID>
              <gml:axisAbbrev>Lon</gml:axisAbbrev>
              <gml:axisDirection>east</gml:axisDirection>
            </gml:CoordinateSystemAxis>
          </gml:usesAxis>
        </gml:EllipsoidalCS>
      </gml:usesEllipsoidalCS>
      <gml:usesGeodeticDatum>
        <gml:GeodeticDatum gml:id="ogrcrs2848">
          <gml:datumName>Pulkovo_1942_83</gml:datumName>
          <gml:datumID>
            <gml:name gml:codeSpace="urn:ogc:def:datum:EPSG::">6178</gml:name>
          </gml:datumID>
          <gml:usesPrimeMeridian>
            <gml:PrimeMeridian gml:id="ogrcrs2849">
              <gml:meridianName>Greenwich</gml:meridianName>
              <gml:meridianID>
                <gml:name gml:codeSpace="urn:ogc:def:meridian:EPSG::">8901</gml:name>
              </gml:meridianID>
              <gml:greenwichLongitude>
                <gml:angle gml:uom="urn:ogc:def:uom:EPSG::9102">0</gml:angle>
              </gml:greenwichLongitude>
            </gml:PrimeMeridian>
          </gml:usesPrimeMeridian>
          <gml:usesEllipsoid>
            <gml:Ellipsoid gml:id="ogrcrs2850">
              <gml:ellipsoidName>Krassowsky 1940</gml:ellipsoidName>
              <gml:ellipsoidID>
                <gml:name gml:codeSpace="urn:ogc:def:ellipsoid:EPSG::">7024</gml:name>
              </gml:ellipsoidID>
              <gml:semiMajorAxis gml:uom="urn:ogc:def:uom:EPSG::9001">6378245</gml:semiMajorAxis>
              <gml:secondDefiningParameter>
                <gml:inverseFlattening gml:uom="urn:ogc:def:uom:EPSG::9201">298.3</gml:inverseFlattening>
              </gml:secondDefiningParameter>
            </gml:Ellipsoid>
          </gml:usesEllipsoid>
        </gml:GeodeticDatum>
      </gml:usesGeodeticDatum>
    </gml:GeographicCRS>
  </gml:baseCRS>
  <gml:definedByConversion>
    <gml:Conversion gml:id="ogrcrs2851">
      <gml:usesMethod xlink:href="urn:ogc:def:method:EPSG::9807" />
      <gml:usesParameterValue>
        <gml:value gml:uom="urn:ogc:def:uom:EPSG::9102">0</gml:value>
        <gml:valueOfParameter xlink:href="urn:ogc:def:parameter:EPSG::8801" />
      </gml:usesParameterValue>
      <gml:usesParameterValue>
        <gml:value gml:uom="urn:ogc:def:uom:EPSG::9102">18</gml:value>
        <gml:valueOfParameter xlink:href="urn:ogc:def:parameter:EPSG::8802" />
      </gml:usesParameterValue>
      <gml:usesParameterValue>
        <gml:value gml:uom="urn:ogc:def:uom:EPSG::9001">1</gml:value>
        <gml:valueOfParameter xlink:href="urn:ogc:def:parameter:EPSG::8805" />
      </gml:usesParameterValue>
      <gml:usesParameterValue>
        <gml:value gml:uom="urn:ogc:def:uom:EPSG::9001">6500000</gml:value>
        <gml:valueOfParameter xlink:href="urn:ogc:def:parameter:EPSG::8806" />
      </gml:usesParameterValue>
      <gml:usesParameterValue>
        <gml:value gml:uom="urn:ogc:def:uom:EPSG::9001">0</gml:value>
        <gml:valueOfParameter xlink:href="urn:ogc:def:parameter:EPSG::8807" />
      </gml:usesParameterValue>
    </gml:Conversion>
  </gml:definedByConversion>
  <gml:usesCartesianCS>
    <gml:CartesianCS gml:id="ogrcrs2852">
      <gml:csName>Cartesian</gml:csName>
      <gml:csID>
        <gml:name gml:codeSpace="urn:ogc:def:cs:EPSG::">4400</gml:name>
      </gml:csID>
      <gml:usesAxis>
        <gml:CoordinateSystemAxis gml:id="ogrcrs2853" gml:uom="urn:ogc:def:uom:EPSG::9001">
          <gml:name>Easting</gml:name>
          <gml:axisID>
            <gml:name gml:codeSpace="urn:ogc:def:axis:EPSG::">9906</gml:name>
          </gml:axisID>
          <gml:axisAbbrev>E</gml:axisAbbrev>
          <gml:axisDirection>east</gml:axisDirection>
        </gml:CoordinateSystemAxis>
      </gml:usesAxis>
      <gml:usesAxis>
        <gml:CoordinateSystemAxis gml:id="ogrcrs2854" gml:uom="urn:ogc:def:uom:EPSG::9001">
          <gml:name>Northing</gml:name>
          <gml:axisID>
            <gml:name gml:codeSpace="urn:ogc:def:axis:EPSG::">9907</gml:name>
          </gml:axisID>
          <gml:axisAbbrev>N</gml:axisAbbrev>
          <gml:axisDirection>north</gml:axisDirection>
        </gml:CoordinateSystemAxis>
      </gml:usesAxis>
    </gml:CartesianCS>
  </gml:usesCartesianCS>
</gml:ProjectedCRS>

3841=PROJCS["Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 6",GEOGCS["Pulkovo 1942(83)",DATUM["Pulkovo_1942_83",SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],TOWGS84[28,-121,-77,0,0,0,0],AUTHORITY["EPSG","6178"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4178"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",18],PARAMETER["scale_factor",1],PARAMETER["false_easting",6500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3841"]]

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=18"
	"k=1"
	"x_0=6500000"
	"y_0=0"
	"ellps=krass"
	"towgs84=28,-121,-77,0,0,0,0"
	"units=m"
	"no_defs"
END

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=0 +lon_0=18 +k=1 +x_0=6500000 +y_0=0 +ellps=krass +towgs84=28,-121,-77,0,0,0,0 +units=m +no_defs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=18 +k=1 +x_0=6500000 +y_0=0 +ellps=krass +towgs84=28,-121,-77,0,0,0,0 +units=m +no_defs">
	</Layer>
</Map>

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 3841, 'EPSG', 3841, '+proj=tmerc +lat_0=0 +lon_0=18 +k=1 +x_0=6500000 +y_0=0 +ellps=krass +towgs84=28,-121,-77,0,0,0,0 +units=m +no_defs ', 'PROJCS["Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 6",GEOGCS["Pulkovo 1942(83)",DATUM["Pulkovo_1942_83",SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],TOWGS84[28,-121,-77,0,0,0,0],AUTHORITY["EPSG","6178"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4178"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",18],PARAMETER["scale_factor",1],PARAMETER["false_easting",6500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3841"]]');

PROJCS["Pulkovo 1942(83) / 3-degree Gauss-Kruger zone 6",GEOGCS["Pulkovo 1942(83)",DATUM["Pulkovo_1942_83",SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],TOWGS84[28,-121,-77,0,0,0,0],AUTHORITY["EPSG","6178"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4178"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",18],PARAMETER["scale_factor",1],PARAMETER["false_easting",6500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3841"]]

[9, 0, (0.0, 0.0, 1.0, 0.0, 18000000.0, 0.0, 6500000.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0), 15]