EPSG:20050

NAD83(2011) / Amtrak NECCS21 (ft)

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Available transformations
to EPSG:4326
No other targets exist for this CRS

  • Puerto Rico , accuracy 2.0 m, code 9774 (default) [3]

Selected transformation

Name: NAD83(2011) to WGS 84 (1)

Method: Geocentric translations (geog2D domain)

Remarks: For many purposes NAD83(2011) can be considered to be coincident with WGS 84. This approximation ignores the ~2.2m offset of NAD83 from the geocentre, the low accuracy of the WGS 84 ensemble and the application of tectonic plate motion to WGS 84 data.

Information source: IOGP

Revision date: 2021-09-08

Attributes

Unit: foot

Geodetic CRS: NAD83(2011)

Datum: NAD83 (National Spatial Reference System 2011)

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Amtrak.

Revision date: 2022-08-30

Scope: Engineering survey and topographic mapping for railway applications.

Area of use: United States (USA) - parts of Connecticut, Delaware, District of Columbia, Maryland, Massachusetts, New Jersey, New York, Pennsylvania, Rhode Island and Virginia on or related to the Amtrak northeast corridor rail route from Boston to Washington DC via New York and Philadelphia.

Coordinate system: Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: ft.

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Center coordinates
-12515293.64 7194943.16

Projected bounds:
-47926329.5 -8198331.67
5265450.64 33608691.54

WGS84 bounds:
167.65 14.92
-63.88 74.71

Puerto Rico - onshore and offshore. United States (USA) onshore and offshore - Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming. US Virgin Islands - onshore and offshore.
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Definition: OGC Well Known Text

PROJCS["NAD83(2011) / Amtrak NECCS21 (ft)",
    GEOGCS["NAD83(2011)",
        DATUM["NAD83_National_Spatial_Reference_System_2011",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[0,0,0,0,0,0,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","6318"]],
    PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],
    PARAMETER["latitude_of_center",40.8333333333333],
    PARAMETER["longitude_of_center",-74],
    PARAMETER["azimuth",58],
    PARAMETER["rectified_grid_angle",58],
    PARAMETER["scale_factor",0.99999],
    PARAMETER["false_easting",1500000],
    PARAMETER["false_northing",1500000],
    UNIT["foot",0.3048],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","20050"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["NAD83(2011) / Amtrak NECCS21 (ft)",
    BASEGEOGCRS["NAD83(2011)",
        DATUM["NAD83 (National Spatial Reference System 2011)",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",6318]],
    CONVERSION["Amtrak North East Corridor Coordinate System 2021 (international foot)",
        METHOD["Hotine Oblique Mercator (variant B)",
            ID["EPSG",9815]],
        PARAMETER["Latitude of projection centre",40.8333333333333,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8811]],
        PARAMETER["Longitude of projection centre",-74,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8812]],
        PARAMETER["Azimuth at projection centre",58,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8813]],
        PARAMETER["Angle from Rectified to Skew Grid",58,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8814]],
        PARAMETER["Scale factor at projection centre",0.99999,
            SCALEUNIT["unity",1],
            ID["EPSG",8815]],
        PARAMETER["Easting at projection centre",1500000,
            LENGTHUNIT["foot",0.3048],
            ID["EPSG",8816]],
        PARAMETER["Northing at projection centre",1500000,
            LENGTHUNIT["foot",0.3048],
            ID["EPSG",8817]]],
    CS[Cartesian,2],
        AXIS["easting (X)",east,
            ORDER[1],
            LENGTHUNIT["foot",0.3048]],
        AXIS["northing (Y)",north,
            ORDER[2],
            LENGTHUNIT["foot",0.3048]],
    USAGE[
        SCOPE["Engineering survey and topographic mapping for railway applications."],
        AREA["United States (USA) - parts of Connecticut, Delaware, District of Columbia, Maryland, Massachusetts, New Jersey, New York, Pennsylvania, Rhode Island and Virginia on or related to the Amtrak northeast corridor rail route from Boston to Washington DC via New York and Philadelphia."],
        BBOX[38.64,-78.51,42.74,-70.48]],
    ID["EPSG",20050]]

Definition: ESRI Well Known Text

PROJCS["NAD_1983_(2011)_Amtrak_NECCS21_(ft)",
    GEOGCS["GCS_NAD_1983_2011",
        DATUM["D_NAD_1983_2011",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],
    PARAMETER["False_Easting",1500000.0],
    PARAMETER["False_Northing",1500000.0],
    PARAMETER["Scale_Factor",0.99999],
    PARAMETER["Azimuth",58.0],
    PARAMETER["Longitude_Of_Center",-74.0],
    PARAMETER["Latitude_Of_Center",40.8333333333333],
    UNIT["foot",0.3048]]

Definition: PROJ.4

+proj=omerc +lat_0=40.8333333333333 +lonc=-74 +alpha=58 +gamma=58 +k=0.99999 +x_0=457200 +y_0=457200 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:20050","+proj=omerc +lat_0=40.8333333333333 +lonc=-74 +alpha=58 +gamma=58 +k=0.99999 +x_0=457200 +y_0=457200 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "NAD83(2011) / Amtrak NECCS21 (ft)",
    "base_crs": {
        "name": "NAD83(2011)",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "NAD83 (National Spatial Reference System 2011)",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 6318
        }
    },
    "conversion": {
        "name": "Amtrak North East Corridor Coordinate System 2021 (international foot)",
        "method": {
            "name": "Hotine Oblique Mercator (variant B)",
            "id": {
                "authority": "EPSG",
                "code": 9815
            }
        },
        "parameters": [
            {
                "name": "Latitude of projection centre",
                "value": 40.8333333333333,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8811
                }
            },
            {
                "name": "Longitude of projection centre",
                "value": -74,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8812
                }
            },
            {
                "name": "Azimuth at projection centre",
                "value": 58,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8813
                }
            },
            {
                "name": "Angle from Rectified to Skew Grid",
                "value": 58,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8814
                }
            },
            {
                "name": "Scale factor at projection centre",
                "value": 0.99999,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8815
                }
            },
            {
                "name": "Easting at projection centre",
                "value": 1500000,
                "unit": {
                    "type": "LinearUnit",
                    "name": "foot",
                    "conversion_factor": 0.3048
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8816
                }
            },
            {
                "name": "Northing at projection centre",
                "value": 1500000,
                "unit": {
                    "type": "LinearUnit",
                    "name": "foot",
                    "conversion_factor": 0.3048
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8817
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Easting",
                "abbreviation": "X",
                "direction": "east",
                "unit": {
                    "type": "LinearUnit",
                    "name": "foot",
                    "conversion_factor": 0.3048
                }
            },
            {
                "name": "Northing",
                "abbreviation": "Y",
                "direction": "north",
                "unit": {
                    "type": "LinearUnit",
                    "name": "foot",
                    "conversion_factor": 0.3048
                }
            }
        ]
    },
    "scope": "Engineering survey and topographic mapping for railway applications.",
    "area": "United States (USA) - parts of Connecticut, Delaware, District of Columbia, Maryland, Massachusetts, New Jersey, New York, Pennsylvania, Rhode Island and Virginia on or related to the Amtrak northeast corridor rail route from Boston to Washington DC via New York and Philadelphia.",
    "bbox": {
        "south_latitude": 38.64,
        "west_longitude": -78.51,
        "north_latitude": 42.74,
        "east_longitude": -70.48
    },
    "id": {
        "authority": "EPSG",
        "code": 20050
    }
}

Definition: GeoServer

20050=PROJCS["NAD83(2011) / Amtrak NECCS21 (ft)",GEOGCS["NAD83(2011)",DATUM["NAD83_National_Spatial_Reference_System_2011",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","6318"]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],PARAMETER["latitude_of_center",40.8333333333333],PARAMETER["longitude_of_center",-74],PARAMETER["azimuth",58],PARAMETER["rectified_grid_angle",58],PARAMETER["scale_factor",0.99999],PARAMETER["false_easting",1500000],PARAMETER["false_northing",1500000],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","20050"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=omerc"
	"lat_0=40.8333333333333"
	"lonc=-74"
	"alpha=58"
	"gamma=58"
	"k=0.99999"
	"x_0=457200"
	"y_0=457200"
	"ellps=GRS80"
	"towgs84=0,0,0,0,0,0,0"
	"units=ft"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=omerc +lat_0=40.8333333333333 +lonc=-74 +alpha=58 +gamma=58 +k=0.99999 +x_0=457200 +y_0=457200 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs">
	<Layer srs="+proj=omerc +lat_0=40.8333333333333 +lonc=-74 +alpha=58 +gamma=58 +k=0.99999 +x_0=457200 +y_0=457200 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 20050, 'EPSG', 20050, '+proj=omerc +lat_0=40.8333333333333 +lonc=-74 +alpha=58 +gamma=58 +k=0.99999 +x_0=457200 +y_0=457200 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs', 'PROJCS["NAD83(2011) / Amtrak NECCS21 (ft)",GEOGCS["NAD83(2011)",DATUM["NAD83_National_Spatial_Reference_System_2011",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","6318"]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],PARAMETER["latitude_of_center",40.8333333333333],PARAMETER["longitude_of_center",-74],PARAMETER["azimuth",58],PARAMETER["rectified_grid_angle",58],PARAMETER["scale_factor",0.99999],PARAMETER["false_easting",1500000],PARAMETER["false_northing",1500000],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","20050"]]');