OSGB36

E1003013

OSGB36 is the geodetic datum used as the reference framework for mapping Great Britain, underpinning the Ordnance Survey National Grid coordinate system.

All labels observed (2)

Label Occurrences
OSGB36 canonical 7
OSGB36 datum 1

How this entity was disambiguated

Statements (41)

Predicate Object
instanceOf geodetic datum
terrestrial reference system
alsoKnownAs Ordnance Survey Great Britain 1936
linked to: Ordnance Survey
axisUnits degrees
basedOn triangulation of Great Britain
category British geodetic datum
coordinateReferenceSystemCode EPSG:4277
coordinateSystemType ellipsoidal
countryUsedIn Great Britain
datumOrigin near Newlyn, Cornwall (mean sea level)
datumShiftRelativeTo WGS84
datumType horizontal datum
ellipsoidInverseFlattening 299.3249646
ellipsoidSemiMajorAxis 6377563.396 metres
epoch 1936
globalAccuracyRelativeToWGS84 lower than modern global datums
gridSystem Ordnance Survey National Grid
hasTransformationParametersDefinedBy EPSG registry
introducedBy Ordnance Survey
latitudeRange 49.9 to 61.1 degrees
localFit optimized for Great Britain landmass
longitudeRange -7.56 to 1.84 degrees
maintainedBy Ordnance Survey
notUsedIn Northern Ireland
primeMeridian Greenwich
realizationOf Airy 1830 ellipsoid fitted to Great Britain
referenceEllipsoid Airy 1830
linked to: Airy 1830 ellipsoid
regionCovered England
Isle of Man
Scotland
Wales
requiresTransformationTo ETRS89
supersededInPracticeBy ETRS89 for some applications
underpins Ordnance Survey National Grid
usedBy Ordnance Survey
usedFor engineering applications in Great Britain
land surveying
large-scale mapping
topographic mapping of Great Britain
usedIn British National Grid
usedWithProjection Transverse Mercator

How these facts were elicited

Referenced by (8)

Full triples — surface form annotated when it differs from this entity's canonical label.