Results 211 to 220 of about 1,120 (242)

Irregular Satellites in the Context of Planet Formation

Space Science Reviews, 2005
All four giant planets in the solar system possess irregular satellites, characterized by large, highly eccentric and/or highly inclined orbits. These bodies were likely captured from heliocentric orbit, probably in association with planet formation itself. Enabled by the use of large-format digital imagers on ground-based telescopes, new observational
David Jewitt, Scott Sheppard
openaire   +1 more source

Optimal Satellite Formation Establishment about an Oblate Planet

AIAA Guidance, Navigation, and Control Conference, 2011
This paper suggests a new approach for generating bounded motion between two spacecraft orbiting an oblate planet. As opposed to most works, the suggested approach does not rely on averaging the osculating orbital elements. Instead, the problem is formulated in local-vertical local-horizontal coordinates, without approximating the gravitational ...
Vladimir Martinusi, Pini Gurfil
openaire   +1 more source

Formation of the regular satellite systems and rings of the major planets

The Moon and the Planets, 1979
In this paper, we apply the ideas presented by one of us (Prentice, 1978a, b) for the development of the proto-solar cloud into a system of Laplacian rings to the development of the protoplanetary clouds which ultimately led to Jupiter, Saturn and Uranus.
A. J. R. Prentice, D. Ter Haar
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Formation of the regular satellites of giant planets in an extended gaseous nebula II: satellite migration and survival

Icarus, 2003
For a satellite to survive in the disk the time scale of satellite migration must be longer than the time scale for gas dissipation. For large satellites (∼1000 km) migration is dominated by the gas tidal torque. We consider the possibility that the redistribution of gas in the disk due to the tidal torque of a satellite with mass larger than the ...
Ignacio Mosqueira, Paul R. Estrada
openaire   +1 more source

The Formation of Nitriles in Hydrocarbon-Rich Atmospheres of Planets and Their Satellites:  Laboratory Investigations by the Crossed Molecular Beam Technique

Accounts of Chemical Research, 2001
Crossed molecular beam experiments of cyano radicals, CN(X(2)Sigma(+)), reacting with unsaturated hydrocarbons have been performed to investigate synthetic routes to nitriles formation in hydrocarbon-rich atmospheres of planets and their moons. We have verified that all cyano radical reactions with acetylene, ethylene, methylacetylene, allene, benzene,
Kaiser R. I., BALUCANI, Nadia
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On the equivalence of the planet-satellite formation processes

Icarus, 1971
Abstract A common pattern is found to exist both in the planetary system and in the satellite systems of Jupiter and Uranus. A quantitative model of this pattern is obtained from the observed parameters of the Jovian and Uranian systems. Calculated values of the Earth-asteroid mass ratio and spatial separation are consistent with observed values ...
openaire   +1 more source

Verification of the precise orbital holding of small satellite formation for remote control of robots on a planet surface

2017 IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace), 2017
The paper considers the tasks of retention of the formation of small satellites for remote control of robots at the hard-to-reach areas of the planet.
A. Medina Padron, Alexander Nebylov, Alexander Knyazhsky   +2 more
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Formation of the Satellite Systems of the Major Planets

Publications of the Astronomical Society of Australia, 1977
It is well known that the satellite systems of the major planets Jupiter, Saturn and Uranus share many of the same regular features that can be seen in the planetary system of the Sun. The inner satellite orbits are nearly circular and lie in the plane defined by the axis of rotation of the central body. Again the distances Rn of the regular satellites,
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ChemInform Abstract: The Formation of Nitriles in Hydrocarbon‐Rich Atmospheres of Planets and Their Satellites: Laboratory Investigations by the Crossed Molecular Beam Technique

ChemInform, 2001
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Ralf I. Kaiser, Nadia Balucani
openaire   +1 more source

Nucleation and growth of iron pebbles explains the formation of iron-rich planets akin to Mercury

Astronomy and Astrophysics, 2022
Anders Johansen, Caroline Dorn
exaly