EPSG:15031

SPCS83 Alaska zone 1 (meter)

Attributes

Data source: EPSG

Information source: NOAA manual NOS NGS 5

Revision date: 2023-11-22

Scope: Engineering survey, topographic mapping.

Remarks: If using Hotine Oblique Mercator (variant B) method (code 9815), Ec=818585.57 m, Nc=575219.25 m.

Method: Hotine Oblique Mercator (variant A)

Area of use: United States (USA) - Alaska - east of 141°W; i.e. Panhandle.

Description: (0,)

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United States (USA) - Alaska - east of 141°W; i.e. Panhandle.

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Definition: OGC Well Known Text

PROJECTION["Hotine_Oblique_Mercator"],
PARAMETER["latitude_of_center",57],
PARAMETER["longitude_of_center",-133.666666666667],
PARAMETER["azimuth",323.130102361111],
PARAMETER["rectified_grid_angle",323.130102361111],
PARAMETER["scale_factor",0.9999],
PARAMETER["false_easting",5000000],
PARAMETER["false_northing",-5000000]

Definition: OGC Well Known Text 2 (2019)

CONVERSION["SPCS83 Alaska zone 1 (meter)",
    METHOD["Hotine Oblique Mercator (variant A)",
        ID["EPSG",9812]],
    PARAMETER["Latitude of projection centre",57,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8811]],
    PARAMETER["Longitude of projection centre",-133.666666666667,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8812]],
    PARAMETER["Azimuth of initial line",323.130102361111,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8813]],
    PARAMETER["Angle from Rectified to Skew Grid",323.130102361111,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8814]],
    PARAMETER["Scale factor on initial line",0.9999,
        SCALEUNIT["unity",1],
        ID["EPSG",8815]],
    PARAMETER["False easting",5000000,
        LENGTHUNIT["metre",1],
        ID["EPSG",8806]],
    PARAMETER["False northing",-5000000,
        LENGTHUNIT["metre",1],
        ID["EPSG",8807]],
    ID["EPSG",15031]]

Definition: ESRI Well Known Text

PROJECTION["Hotine_Oblique_Mercator_Azimuth_Natural_Origin"],
PARAMETER["False_Easting",5000000.0],
PARAMETER["False_Northing",-5000000.0],
PARAMETER["Scale_Factor",0.9999],
PARAMETER["Azimuth",-36.8698976388889],
PARAMETER["Longitude_Of_Center",-133.666666666667],
PARAMETER["Latitude_Of_Center",57.0]

Definition: PROJ.4

+proj=omerc +no_uoff +lat_0=57 +lonc=-133.666666666667 +alpha=323.130102361111 +gamma=323.130102361111 +k=0.9999 +x_0=5000000 +y_0=-5000000

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:15031","+proj=omerc +no_uoff +lat_0=57 +lonc=-133.666666666667 +alpha=323.130102361111 +gamma=323.130102361111 +k=0.9999 +x_0=5000000 +y_0=-5000000");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Conversion",
    "name": "SPCS83 Alaska zone 1 (meter)",
    "method": {
        "name": "Hotine Oblique Mercator (variant A)",
        "id": {
            "authority": "EPSG",
            "code": 9812
        }
    },
    "parameters": [
        {
            "name": "Latitude of projection centre",
            "value": 57,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8811
            }
        },
        {
            "name": "Longitude of projection centre",
            "value": -133.666666666667,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8812
            }
        },
        {
            "name": "Azimuth of initial line",
            "value": 323.130102361111,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8813
            }
        },
        {
            "name": "Angle from Rectified to Skew Grid",
            "value": 323.130102361111,
            "unit": "degree",
            "id": {
                "authority": "EPSG",
                "code": 8814
            }
        },
        {
            "name": "Scale factor on initial line",
            "value": 0.9999,
            "unit": "unity",
            "id": {
                "authority": "EPSG",
                "code": 8815
            }
        },
        {
            "name": "False easting",
            "value": 5000000,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8806
            }
        },
        {
            "name": "False northing",
            "value": -5000000,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8807
            }
        }
    ],
    "id": {
        "authority": "EPSG",
        "code": 15031
    }
}

Definition: GeoServer

15031=PROJECTION["Hotine_Oblique_Mercator"],PARAMETER["latitude_of_center",57],PARAMETER["longitude_of_center",-133.666666666667],PARAMETER["azimuth",323.130102361111],PARAMETER["rectified_grid_angle",323.130102361111],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",5000000],PARAMETER["false_northing",-5000000]

Definition: MapServer - MAPfile

PROJECTION
	"proj=omerc"
	"no_uoff"
	"lat_0=57"
	"lonc=-133.666666666667"
	"alpha=323.130102361111"
	"gamma=323.130102361111"
	"k=0.9999"
	"x_0=5000000"
	"y_0=-5000000"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=omerc +no_uoff +lat_0=57 +lonc=-133.666666666667 +alpha=323.130102361111 +gamma=323.130102361111 +k=0.9999 +x_0=5000000 +y_0=-5000000">
	<Layer srs="+proj=omerc +no_uoff +lat_0=57 +lonc=-133.666666666667 +alpha=323.130102361111 +gamma=323.130102361111 +k=0.9999 +x_0=5000000 +y_0=-5000000">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 15031, 'EPSG', 15031, '+proj=omerc +no_uoff +lat_0=57 +lonc=-133.666666666667 +alpha=323.130102361111 +gamma=323.130102361111 +k=0.9999 +x_0=5000000 +y_0=-5000000', 'PROJECTION["Hotine_Oblique_Mercator"],PARAMETER["latitude_of_center",57],PARAMETER["longitude_of_center",-133.666666666667],PARAMETER["azimuth",323.130102361111],PARAMETER["rectified_grid_angle",323.130102361111],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",5000000],PARAMETER["false_northing",-5000000]');