单词 | Roche's limit |
释义 | Roche's limit [`rō·shǝz ´lim·ǝt] ASTROPHYSICS The limiting distance below which a satellite orbiting a celestial body would be disrupted by the tidal forces generated by the gravitational attraction of the primary; the distance depends on the relative densities of the bodies and on the orbit of the satellite; it is computed by R = 2.45(Lr ), where L is a factor that depends on the relative densities of the satellite and the body, R is the radius of the satellite's orbit measured from the center of the primary body, and r is the radius of the primary body; if the satellite and the body have the same density, the relationship is R =2.45r. |
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