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Teoloyucan Magnetic Observatory

Mexico · North America
✦ 19.7500, -99.1900

Satellite imagery: Esri, Maxar, Earthstar Geographics

About this observatory

Teoloyucan Magnetic Observatory, in the State of Mexico, is the country's only geomagnetic observatory, quietly recording Earth's magnetic field around the clock since 1914.

About Teoloyucan Magnetic Observatory

Run by the Magnetic Service of UNAM's Geophysics Institute, the observatory measures the geomagnetic field's D, H, and Z components, sampling every five seconds and integrating readings into one-minute values. It is part of INTERMAGNET, a worldwide network of over 100 geomagnetic observatories, and maintains continuous baseline calibration to keep its data to a high standard.

History

The observatory has operated in Teoloyucan since August 1914. Before that, its predecessor ran in Mexico City from 1879 to 1912, but was relocated after electromagnetic interference from the growing city made accurate readings impossible.

Location & getting there

Teoloyucan sits in the State of Mexico, near Mexico City, a location chosen originally to escape the capital's electromagnetic noise.

Visiting Teoloyucan Magnetic Observatory

As a specialised research facility monitoring Earth's magnetic field rather than a public viewing site, Teoloyucan Magnetic Observatory does not advertise general visiting hours. Check with UNAM's Geophysics Institute for any current access arrangements.

See your named star from here

Teoloyucan Magnetic Observatory studies the Earth's own field rather than the night sky, so it isn't set up to point a telescope at anything. If you're hoping to see a star named through Star Register, take its coordinates to a dedicated astronomical observatory near you, or use our star packages and catalogue to explore it from home.

Opening hours

Opening hours and public-visit programs vary by season. Check the official website and Google Maps for current times before you travel.

Frequently asked questions
It is located in Teoloyucan, in the State of Mexico, near Mexico City.
It is Mexico's only geomagnetic observatory, continuously measuring the Earth's magnetic field as part of the INTERMAGNET network.
It has operated in Teoloyucan since August 1914, after its predecessor site in Mexico City closed in 1912 due to electromagnetic interference.
It is a specialised research facility rather than a public viewing site, so check with UNAM's Geophysics Institute for any visiting arrangements.
Location
Nearby observatories
Teoloyucan Magnetic Observatory, Mexico | Star-Register.eu