Airy's meridian line

Airy's meridian line (HM27QU)

Location: London, England SE10 8XJ Greater London
Country: United Kingdom
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N 51° 28.674', W 0° 0.089'

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George Biddell Airy, seventh Astronomer Royal, commissioned the enormous telescope that still defines the Prime Meridian and is situated in the building ahead of you. Observations made here were used by cartographers, surveyors, navigators and astronomers. By 1884 most ships were using charts based on this meridian line. Since that year it has been the baseline for world time.
You are now standing on the Prime Meridian of the world, as defined by Airy's telescope and agreed by international convention in 1884.
Astronomers worked in pairs on the Airy Transit Circle: one looked through the eyepiece while the other observed the microscope readings on the stone pier.
HM NumberHM27QU
Marker ConditionNo reports yet
Date Added Thursday, May 24th, 2018 at 1:01pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)30U E 708214 N 5707235
Decimal Degrees51.47790000, -0.00148333
Degrees and Decimal MinutesN 51° 28.674', W 0° 0.089'
Degrees, Minutes and Seconds51° 28' 40.44" N, 0° 0' 5.34" W
Driving DirectionsGoogle Maps
Which side of the road?Marker is on the right when traveling South
Closest Postal AddressAt or near Blackheath Ave, London England SE10 8XJ, GB
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