from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The scientific measurement of the positions and motions of celestial bodies.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the branch of astronomy that deals with the measurement of the positions and motions of celestial bodies, particularly stars.
from the GNU version of the Collaborative International Dictionary of English
- n. The art of making measurements among the stars, or of determining their relative magnitudes.
from The Century Dictionary and Cyclopedia
- n. The art of determining by measurement the apparent relative magnitude of the stars.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the branch of astronomy that deals with the measurement of the position and motion of celestial bodies
That research team used a different analysis method known as astrometry.
The researchers found the planet using a method called astrometry, which precisely tracks the position of stars over time.
The National Aeronautics and Space Administration said the technique, called astrometry, involves measuring the motions of a star as an unseen planet tugs the star back and forth.
One of the biggest requirements arguments was over an exact and usually uninteresting subfield of astronomy called astrometry, the study of how to measure precisely a star’s position in the sky.
The first player organizes his hand by type, for example he may have 3 "astrometry" cards, 2 "pulsar timing" cards, and 2 "direct imaging" cards.
The player above is able to use two of his "astrometry" detection cards on that star.
These, along with the two-element interferometers such as the Keck Observatory, contribute valuable observations and science such as astrometry, stellar diameters, binary star orbits, stellar accretion disks, stellar mass loss, sunspots on other stars, and more!
The pipeline that read out the positions of all the objects on the sky, called the astrometric pipeline, was to be done by the U.S. Naval Observatory, which had a tradition in astrometry for navigation.
Gaia will be, in my opinion, the greatest of all, observing stars down to 12th magnitude, and doing astrometry, radial velocity and spectrophotometry – all made to a higher precision.
Using astrometry to look for exoplanets has been around for 50 years, but it hadn't bagged a verified exoplanet – until, astronomers thought, earlier this year.