Epimetheus, a small moon of Saturn, has a rotational libration (an oscillation about synchronous rotation) of 5.9◦±1.2◦, placing Epimetheus in the company of Earth’s Moon and Mars’ Phobos as the only natural satellites for which forced rotational libration has been detected. The forced libration is caused by the satellite’s slightly eccentric orbit and non-spherical shape. Detection of a moon’s...

A large-scale network is one in which the automated network systems must be able to manage the network as a single entity rather than managing individual connections between networks. A large scale network consists of an overall architecture. An overlay architecture is used to improve internet routing and quality of service guarantees to achieve higher quality streaming media. The existing over...

[1] The Saturnian system’s configuration and dynamics are to a large extent controlled by the planet’s rapid rotation and the plasma in the magnetosphere. Therefore characterizing the relative importance of the various plasma sources is crucial to understanding Saturn’s magnetosphere. Most research in this area focuses on the addition of mass from the icy satellites, the rings, and Titan, while...

Saturn is orbited by a half dozen ice rich middle-sized moons (MSMs) of diverse geology and composition (e.g. Smith et al. , 1981; Thomas, 2010; Schenk et al. , 2011) that comprise ∼4.4% of Saturn’s satellite mass. The rest is Titan, more massive per planet than Jupiter’s satellites combined. Jupiter has no MSMs. Disk-based models to explain these differences exist (e.g. Sasaki et al. , 2010; C...

Since its discovery at Jupiter in 1988, emission from H(3)(+) has been used as a valuable diagnostic tool in our understanding of the upper atmospheres of the giant planets. One of the lasting questions we have about the giant planets is why the measured upper atmosphere temperatures are always consistently hotter than the temperatures expected from solar heating alone. Here, we describe how H(...

[1] We detected N in Saturn’s magnetosphere in the range L 3.5 to 9.5 Saturn Radii (Rs) using data collected by the Cassini Plasma Spectrometer during Saturn Orbit Insertion and the following orbit (Rev A). The presence of N in Saturn’s magnetosphere has been a source of much debate since Voyager’s detection of unresolved mass/charge 14–16 amu ions in this region. Two principal nitrogen sources...

[1] A long-standing discrepancy exists in determinations from observations and modeling of the diurnal variation of the peak electron density of Saturn’s ionosphere. Using a new Saturn-Thermosphere-Ionosphere-Model (STIM), we examine the suggestion by Burns et al. (1983) that Saturn’s rings shadow its ionosphere causing radio penetration ‘‘holes’’, thereby allowing lightning-induced radio signa...

For the two-body system Saturn-Mimas and the theoretical three-body non-resonant system Saturn-Mimas-Tethys we present a theoretical analysis of the behaviour of the partial derivatives of the satellites’ coordinates with respect to the parameters of the system, namely the satellites’ initial conditions and their mass-ratios over Saturn. With the use of Floquet theory for the stability of perio...

The use of Information Systems (IS) in manufacturing plants for monitoring, control, diagnostics, etc. has increased considerably in the recent past. The primary drivers are efficiency and quality increase through automation, facilitation of better business processes and improved decision making. Many problems and issues relating to the design, development, integration, evolution and maintenanc...

We have studied the capture of planetesimals in Trojan-type orbits by a growing proto-planet. The change of the gravity field due to the mass growth causes a significant fraction of planetesimals orbiting nearby to be trapped as Trojans of the proto-planet. After a planetesimal is captured on a Trojan-type orbit, the libration amplitude of its critical argument is consistently reduced by the fu...