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Movie of Mercury's Magnetic Equator Versus Longitude
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Movie of Mercury's Magnetic Equator Versus Longitude
Release Date: June 16, 2011
Topics: MAG, Movies, NASA Press Conference 06/16/2011

Click here to watch this movie.

Date Presented: June 16, 2011, at a NASA press conference
Instrument: Magnetometer (MAG)

Of Interest: This movie shows the location of Mercury's magnetic equator determined on successive orbits as the point where the direction of the internal magnetic field is parallel to the spin axis of the planet. This magnetic equator is well north of the planet's geographic equator (indicated by the horizontal gray line). The best-fitting internal dipole magnetic field is located about 0.2 Mercury radii, or 480 km, northward of the planet's center. The dynamo mechanism in Mercury's molten outer core responsible for generating the planet's magnetic field therefore has a strong north-south asymmetry.

The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation are unraveling the history and evolution of the Solar System's innermost planet. Visit the Why Mercury? section of this website to learn more about the key science questions that the MESSENGER mission is addressing. During the one-year primary mission, MDIS is scheduled to acquire more than 75,000 images in support of MESSENGER's science goals.

Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

For information regarding the use of MESSENGER images, see the image use policy.


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