- proper motions
- movimientos propios
English-Spanish dictionary of astronomy terms. 2014.
proper motions
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Proper motion — The proper motion of a star is its angular change in position over time as seen from the center of mass of the solar system.[1] It is measured in seconds of arc per year, arcsec/yr, where 3600 arcseconds equal one degree.[2] This contrasts with… … Wikipedia
proper motion — Astron. the angular motion of a star relative to a suitably defined frame of reference, expressed in seconds of arc per year. Cf. tangential motion. [1595 1605] * * * Apparent motion of a star across the celestial sphere at right angles to the… … Universalium
Motions in the time-frequency distribution — Several techniques can be used to move signals in the time frequency distribution. Similar to computer graphic techniques, signals can be subjected to horizontal shifting, vertical shifting, dilation (scaling), shearing, and rotation. These… … Wikipedia
Simple motions — Motion Mo tion, n. [F., fr. L. motio, fr. movere, motum, to move. See {Move}.] 1. The act, process, or state of changing place or position; movement; the passing of a body from one place or position to another, whether voluntary or involuntary;… … The Collaborative International Dictionary of English
Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… … Universalium
Alpha Centauri — This article is about α Centauri . For a Centauri , see V761 Centauri. For A Centauri , see A Centauri. For other uses, see Alpha Centauri (disambiguation). Alpha Centauri A[1]/B[2] … Wikipedia
Star catalogue — An illustration of the Perseus constellation (after Perseus from Greek mythology) from the star catalogue published by the German astronomer Johannes Hevelius in 1690 A star catalogue, or star catalog, is an astronomical catalogue that lists… … Wikipedia
Лейтен, Виллем Якоб — Виллем Якоб Лейтен Willem Jacob Luyten Дата рождения: 7 марта 1899(1899 03 07) Место рождения: Семаранг, Ява Дата смерти … Википедия
Виллем Лейтен — Виллем Якоб Лейтен (7 марта 1899, Семаранг – 21 ноября 1994, Миннеаполис) голландско американский астроном. Содержание 1 Биография 2 Награды 3 Библиография … Википедия
Виллем Якоб Лейтен — (7 марта 1899, Семаранг – 21 ноября 1994, Миннеаполис) голландско американский астроном. Содержание 1 Биография 2 Награды 3 Библиография … Википедия
Лейтен — Лейтен, Виллем Якоб Виллем Якоб Лейтен (7 марта 1899, Семаранг – 21 ноября 1994, Миннеаполис) голландско американский астроном. Содержание 1 Биография 2 Награды … Википедия
