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1. Astrometry can also detect small wobbles in the motions of stars that may reveal unseen companion stars or large planets.

2. Visual position measurements in astrometry are most affected.

3. Now that astrometry has proven its value in detecting planets around red dwarfs, it is likely that many more such worlds will be discovered in the coming years.

4. Most astrometry software packages use the Guide Star Catalogue, so a CD-ROM drive is also required.

5. A new theoretical system of astrometry in the frame of relativity ought to be finished.

6. Conversely, astrometry works best when a planetary system is "face-on" when seen from Earth, because then the star's movements in the orbital plane are most pronounced.

7. In Astrometry, the term is applied to the difference between the observed position (or magnitude) of a reference star and the position (or magnitude) listed in the star catalog.

8. Astrometry is the earliest astronomy developed discipline, study of celestial bodies because it can provide basic information on the movement and its relevance for the community life services.

9. In the routine photographic astrometry , the position determination of faint celestial body is realized by using multi-step transition of reference stars.

10. It is therefore not altogether surprising that astrometry was also the first method used in searching for planets around faraway stars.

11. The planet, called VB 10b, was discovered using astrometry, a method inwhich the wobble induced by a planet on its star is measured preciselyon the sky.

12. In other words, astrometry is ideally suited for detecting planetary systems like our own.

13. Astrometry, in contrast, works best with planets that orbit at a considerable distance from their star, because such planets induce a greater displacement in the position of their stars.

14. A set of new theory and method of astrometry are being modified, we should catch up with development of this field.

15. Astrometry is the study of the precise measurements of the positions and movement of stars.

16. The Earth's rotation and revolution Movement was originally astrometry and ground studies of common research topics, but the methods and goals of different.

17. In a way, "astrometry" is precisely what astronomers have always done, measuring the exact positions of celestial objects.

18. A second method for identifying planets around stars is introduced: the astrometry method.

19. In this paper, the present situation in research on relativity in astrometry was summarized.

20. The effects of relativity on a lot of subjects in astrometry have been discussed and applied in reduction of data.

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21. Anomalous refraction is believed to be the main error source for classical astrometry.

22. Study on the Earth with a variety of astronomical state of motion and mechanical mechanisms of disciplines, is astrometry intersection of science and earth science.

23. We discuss the relation, the development and the outlook of astrometry and astrodynamics.

24. Astronomy is the study of the universe beyond the earth's atmosphere. The main branches are astrometry , celestial mechanics, and astrophysics.

25. In this paper, the changes of terminology, concepts and definitions are described. The reasons for the changes, the influences on classical astrometry are discussed.