Description of CRS - NO_NGO1948 / NO_TM| Attribute | Entry |
|---|
| Country | Norway |
| Country identifier | NO |
| CRS identifier | NO_NGO1948 / NO_TM |
| CRS alias |
|
| CRS valid area | Norway |
| CRS scope | |
| CRS remarks | old CRS in Norway, new CRS - NO_ETRS89 / UTM - is adopted
since 1997 |
| Datum identifier | NGO1948 |
| Datum alias | Norges Geografiske Oppmailing |
| Datum type | geodetic |
| Datum anchor point | Norway, Oslo Observatory,
Lat = 59°54'43.7020" N,
Lon = 10°43'22.5000" E |
| Datum realization epoch | 1948 |
| Datum valid area | Norway |
| Datum scope |
|
| Datum remarks |
|
| Prime meridian identifier | Oslo |
| Prime meridian greenwich longitude | 10°43'22.5" E |
| Prime meridian remarks | |
| Ellipsoid identifier | Bessel NGO1948 |
| Ellipsoid alias | |
| Ellipsoid semi major axis | 6 377 492.0176 m |
| Ellipsoid shape | true |
| Ellipsoid inverse flattening | 299.15281285 |
| Ellipsoid remarks | modified Bessel ellipsoid |
| Coordinate system identifier | NO_TM |
| Coordinate system type | projected |
| Coordinate system dimension | 2 |
| Coordinate system remarks | |
| Coordinate system axis name | X / northing |
| Coordinate system axis direction | North |
| Coordinate system axis unit identifier | metre |
| Coordinate system axis name | Y / easting |
| Coordinate system axis direction | East |
| Coordinate system axis unit identifier | metre |
| Operation identifier | NO_TM |
| Operation valid area | Norway |
| Operation scope | |
| Operation method name | Transverse Mercator Projection |
| Operation method name alias | Gauß Krüger Projection |
| Operation method formula | Transverse Mercator Mapping Equations, in Hooijberg,
Practical Geodesy, 1997, pages 81-84 |
| Operation method parameters number | 6 |
| Operation method remarks | Gauss-Krüger projection in 8 different zones with special
Central Meridians (CM) wrt Oslo and unregular distances
between the CM |
| Operation parameter name | latitude of origin |
| Operation parameter value | 58° N |
| Operation parameter remarks | |
| Operation parameter name | longitude of origin of zones |
| Operation parameter value | zone 1: 06°03'22.5" E
zone 2: 08°23'22.5" E
zone 3: 10°43'22.5" E
zone 4: 13°13'22.5" E
zone 5: 16°53'22.5" E
zone 6: 20°53'22.5" E
zone 7: 24°53'22.5" E
zone 8: 29°03'22.5" E |
| Operation parameter remarks | zone 1: 04°40' W wrt Oslo
zone 2: 02°20' W wrt Oslo
zone 3: 0°00' wrt Oslo
zone 4: 02°30' E wrt Oslo
zone 5: 06°10' E wrt Oslo
zone 6: 10°10' E wrt Oslo
zone 7: 14°10' E wrt Oslo
zone 8: 18°20' E wrt Oslo |
| Operation parameter name | false northing |
| Operation parameter value | 0 m |
| Operation parameter remarks | |
| Operation parameter name | false easting |
| Operation parameter value | 0 m |
| Operation parameter remarks | |
| Operation parameter name | scale factor at central meridian |
| Operation parameter value | 1.0000 |
| Operation parameter remarks | |
| Operation parameter name | longitude limits of zones |
| Operation parameter value | zone 1: most westerly point of NO ... 3°30' W wrt Oslo
zone 2: 03°30' W ... 01°10' W wrt Oslo
zone 3: 01°10' W ... 01°15' E wrt Oslo
zone 4: 01°15' E ... 04°20' E wrt Oslo
zone 5: 04°20' E ... 08°10' E wrt Oslo
zone 6: 08°10' E ... 12°10' E wrt Oslo
zone 7: 12°10' E ... 16°15' E wrt Oslo
zone 8: 16°15' E ... most easterly point of NO |
| Operation parameter remarks | |