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Royal Observatory Greenwich
Latitude and Longitude
Airy Transit Circle (ATC)
WGS84 and the Greenwich Meridian
The Greenwich Meridian before the ATC
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LocationEngland
West Sussex
East Grinstead
N side of: Herontye Drive
Distance (S) from Greenwich
OS map detailsOS Explorer: 135
OS grid refTQ 39958.37559
(539958,137559)
WGS84 lat/long51.120230, -0.001612
TypeMarker 'stone'
Marking date2000
AccessNone, but visible from public road