astrometry

Example Sentences

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A related technique, astrometry, could do much the same thing, pinpointing planetary masses by measuring how each world’s gravitational influence slightly shifts its star’s position in the plane of the sky.

From Scientific American

"We show that the existence of the planet can be ascertained, and its true mass can be determined with high accuracy, by combining Gaia astrometry and radial velocities."

From Fox News

Measuring these shifts, or parallaxes, lets astronomers calculate the stars’ actual positions and movements through the galaxy with great precision, a field of study called astrometry that Gaia and its predecessor Hipparcos have revitalized.

From National Geographic

The astrometry data collected by Gaia will augment scientific observations made by powerful ground-based telescopes.

From Forbes

It will be engaged in what is termed astrometry - the science of mapping the locations and movements of celestial objects.

From BBC