Description of CRS - PT_AZO_CENT / UTM| Attribute | Entry |
|---|
| Country | Portugal |
| Country identifier | PT |
| CRS identifier | PT_AZO_CENT / UTM |
| CRS alias |
|
| CRS valid area | Portugal, Azores, Central Islands (Graciosa, Terceira, S.
Jorge, Pico, Faial) |
| CRS scope | |
| CRS remarks |
|
| Datum identifier | AZO_CENT |
| Datum alias | Graciosa Base SW |
| Datum type | geodetic |
| Datum anchor point | Base SW |
| Datum realization epoch | 1948 |
| Datum valid area | Portugal, Azores, Central Islands (Graciosa, Terceira, S.
Jorge, Pico, Faial) |
| Datum scope | support of cartographic activities |
| Datum remarks | Consult "Cartografia Matematica" and "Sistemas
Geo-Cartograficos em uso
no I.G.C." |
| Prime meridian identifier | Greenwich |
| Prime meridian greenwich longitude | 0° |
| Prime meridian remarks | |
| Ellipsoid identifier | Hayford 1909 |
| Ellipsoid alias | International 1924 |
| Ellipsoid semi major axis | 6 378 388 m |
| Ellipsoid shape | true |
| Ellipsoid inverse flattening | 297 |
| Ellipsoid remarks | |
| Coordinate system identifier | Universal Transverse Mercator |
| Coordinate system type | projected |
| Coordinate system dimension | 2 |
| Coordinate system remarks | Projection: Transverse Mercator in zones, 6° width in
general |
| Coordinate system axis name | northing / N |
| Coordinate system axis direction | North |
| Coordinate system axis unit identifier | metre |
| Coordinate system axis name | easting / E |
| Coordinate system axis direction | East |
| Coordinate system axis unit identifier | metre |
| Operation identifier | Universal Transverse Mercator |
| Operation valid area | in general: world-wide |
| Operation scope | |
| Operation method name | Universal Transverse Mercator Projection |
| Operation method name alias |
|
| Operation method formula | Transverse Mercator Mapping Equations, in Hooijberg,
Practical Geodesy, 1997, pages 81-84, 111-114 |
| Operation method parameters number | 9 |
| Operation method remarks |
|
| Operation parameter name | latitude of origin |
| Operation parameter value | 0° |
| Operation parameter remarks | 0°, the Equator |
| Operation parameter name | longitude of origin |
| Operation parameter value | central meridian (CM) of zone
for AZO_CENT: 27° W in use |
| Operation parameter remarks | in general: central meridians ...,3° W, 3° E, 9° E,
15° E, 21° E,... |
| Operation parameter name | false northing |
| Operation parameter value | 0 m for northern hemisphere
10 000 000 m for southern hemisphere |
| Operation parameter remarks | |
| Operation parameter name | false easting |
| Operation parameter value | 500 000 m |
| Operation parameter remarks | |
| Operation parameter name | scale factor at central meridian |
| Operation parameter value | 0.9996 |
| Operation parameter remarks | |
| Operation parameter name | width of zones |
| Operation parameter value | in general: 6° |
| Operation parameter remarks | |
| Operation parameter name | zone number n |
| Operation parameter value | in general: 1...60
for AZO_CENT: zone 26 in use |
| Operation parameter remarks | zone number 1 from 180° West increasing eastwards e.g.
for Central Meridian 9° E - zone number 32 |
| Operation parameter name | latitude limits of system |
| Operation parameter value | 84° N
80° S |
| Operation parameter remarks | |
| Operation parameter name | limits of zones |
| Operation parameter value | in general: by meridians whose longitudes are multiples of
6° West / 6° East of Greenwich |
| Operation parameter remarks | |