librate การใช้

• Objects in a horseshoe orbit librate around 180?from the primary.
• Objects librating around 0?are called quasi-satellites.
• Quasi-satellites are co-orbital objects that librate around 0?from the primary.
• Another class is the horseshoe orbit, in which objects librate around 180?from the larger body.
• They slowly librate around their respective equilibrium points, periodically moving closer to Jupiter or farther from it.
• A super-Earth at 250 AU would cause these objects to librate around ? = for billions of years.
• If only two out of the three orbits are librating the object is classified as " probably " in resonance.
• Unlike Earth's Moon, Enceladus does not appear to librate about its spin axis ( more than 1.5?).
• Accordingly, the Lancashire Pipe Rolls reveal that the sheriff associated twenty librates of land with R?gnvaldr during the year spanning Michaelmas 1205 and Michaelmas 1206.
• The silicon atoms of cryptohalite, ?-( NH 4 ) 2 SiF 6 ( alpha ), have librates ( oscillates )  at least when vibrationally excited.
• Although these objects are in 1 : 1 orbital resonance, they are not Earth trojans because they do not librate around a definite Sun Earth Lagrangian point, either or.
• It is closely related to 1362 Griqua and 1921 Pala, which also received tribal name and librate in the 2 : 1 ratio of Jupiter's mean motion as well.
• First, Pluto's argument of perihelion, the angle between the point where it crosses the ecliptic and the point where it is closest to the Sun, librates around 90?
• If all three orbits remain resonant ( i . e . the argument of the resonance is librating, see formal definion ), the classification as a resonant object is considered secure.
• The most common and best-known class is the trojan, which librates around one of the two stable Lagrangian points ( Trojan points ), and, 60?ahead of and behind the larger body respectively.
• Together with the Agnia family, the Padua family is the only other family to have most of its members in a nonlinear secular resonance configuration with more than 75 % of its members in a z1 librating state.
• Relative to Jupiter, each Trojan librates around one of Jupiter's two stable Lagrangian points, " ", lying 60?ahead of the planet in its orbit, and " ", 60?behind.
• For example, in the case of Pluto, the resonant angle \ phi librates around 180?with an amplitude of around 82?degrees, i . e . the angle changes periodically from 180? " 82?to 180?+ 82?
• On 15 May 1218 Henry confirmed William's lordship of the manor of Torrington, Lincolnshire and 10 librates ( ?0 worth of land ) in Berwick, Sussex which his father had previously given him by charter . 1461 }}
• In this arrangement the arguments of perihelion of the objects would librate about 0?or 180?so that their orbits cross the plane of the planet's orbit near perihelion and aphelion, at the farthest points from the planet . and ) by them.