English: This histogram clearly shows the primary Kirkwood gaps in the asteroid main-belt. These gaps (labeled "3:1", "5:2", "7:3", "2:1") are caused by mean-motion resonances between an asteroid and Jupiter. For example, the 3:1 Kirkwood gap is located where the ratio of an asteroid's orbital period to that of Jupiter is 3/1 (the asteroid completes 3 orbits for every 1 orbit of Jupiter). The effect of these mean-motion resonances is a change in the asteroid's orbital elements (particularly semimajor axis) sufficient to create these gaps in semimajor axis space.
Español: Este histograma muestra claramente los huecos de Kirkwood primarios del cinturón principal de asteroides. Estos huecos (marcados "3:1", "5:2", "7:3", "2:1") se originan por las resonancias orbitales entre un asteroide y Júpiter. Por ejemplo, el hueco de Kirkwood 3:1 se localiza en el punto en el que el periodo orbital del asteroide guardaría una relación de 3/1 con el de Júpiter (el asteroide completaría justo tres órbitas por cada una de Júpiter). El efecto de estas resonancias orbitales son cambios en los elementos orbitales de los asteroides (principalmente en su semieje mayor) suficientes para generar estos huecos en la distribución espacial de las órbitas asteroidales.
На веб-сайте NASA размещено большое число изображений Советского/Российского космического агентства и других неамериканских космических агентств. Они вовсе не обязательно находятся в общественном достоянии.
Совместный проект SOHO (ESA & NASA) предполагает, что все материалы, созданные их зондом, защищены авторским правом и требуют разрешения для коммерческого необразовательного использования. [2]
2009-08-04T20:57:44Z Quibik 792x612 (114442 Bytes) Further optimized.
2009-08-04T19:34:47Z Quibik 792x612 (173601 Bytes) Combined vertical bars into single path, thus reducing file size. Made SVG-standard compliant.
2009-01-25T01:14:06Z Jtratcliff 792x612 (556736 Bytes) {{Information |Description={{en|1=This histogram clearly shows the primary Kirkwood gaps in the asteroid main-belt. These gaps (labeled "3:1", "5:2", "7:3", "2:1") are caused by mean-motion resonances between an asteroid and
{{Information |Description={{en|1=This histogram clearly shows the primary Kirkwood gaps in the asteroid main-belt. These gaps (labeled "3:1", "5:2", "7:3", "2:1") are caused by mean-motion resonances between an asteroid and Jupiter. For example, the 3:1