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.
Això és una imatge retocada, cosa que vol dir que ha estat alterada digitalment de la seva versió original. Modificacions: Traducida al castellano. L'original es pot veure a: Kirkwood Gaps.svg: . Modificacions fetes per Karshan.
El lloc web de la NASA disposa d'un gran nombre d'imatges de l'Agència Espacial Russa, o soviètica, i d'altres agències no nord-americanes. Aquestes imatges no són necessàriament en el domini públic.
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