Flamsteed's Meridian Line -- Royal Observatory, Greenwich, London, UK
N 51° 28.673 W 000° 00.088
30U E 708215 N 5707233
The meridian line determined by Astronomer Royal John Flamsteed in the 1690s allowed him to accurately chart the position of 3000 stars over 40 years
Waymark Code: WMT420
Location: London, United Kingdom
Date Posted: 09/21/2016
Views: 5
One of several historical meridian lines surveyed by Astronomers Royal before 1884 (when the Prime Meridian was determined), Flamsteed's Meridian line is marked on the inside of the Royal Observatory at Greenwich.
A nearby historical plaque reads as follows:
"This north-south line, or meridian, marks the west wall of the small garden building where the first Astronomer Royal, John Flamsteed, had his main telescope from 1689 -- a 140-degree mural arc made by Abraham Sharp."
Type of Historic Marker: Interpretive sign
Historical Marker Issuing Authority: Royal Museums Greenwich
Age/Event Date: 01/01/1690
Related Website: [Web Link]
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