Monte Mario Observatory

Coordinates: 41°55′21″N 12°27′09″E / 41.9225°N 12.4525°E / 41.9225; 12.4525
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Monte Mario Observatory
Observatory code 034 Edit this on Wikidata
Location, Rome, Metropolitan City of Rome Capital, Lazio, Italy
Coordinates41°55′21″N 12°27′09″E / 41.9225°N 12.4525°E / 41.9225; 12.4525
Altitude128 m (420 ft) Edit this at Wikidata
Established1923 Edit this on Wikidata
Websitewww.oa-roma.inaf.it/oar/monte-mario/ Edit this at Wikidata
Monte Mario Observatory is located in Italy
Monte Mario Observatory
Location of Monte Mario Observatory
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The Monte Mario Observatory (Sede di Monte Mario, literally "Site of Monte Mario") is an astronomical observatory and is administratively part of the Observatory of Rome (Osservatorio Astronomico di Roma). It is located atop Monte Mario, near the right bank of the river Tiber, in the municipality of Rome, Italy. This location (12°27'8.4"E ) was used as the prime meridian (rather than that of Greenwich) for maps of Italy until the 1960s.

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