Distribution of the Mean Motions of Planets and Satellites and the Development of the Solar System

1974 ◽  
pp. 23-23
Author(s):  
H. Jehle
Keyword(s):  
Solar System ◽  
Planets And Satellites ◽  
The Mean

scholarly journals Distribution of the Mean Motions of Planets and Satellites and the Development of the Solar System

1974 ◽  
Vol 62 ◽  
pp. 23-23
Author(s):  
H. Jehle
Keyword(s):  
Solar System ◽  
Gravitational Interaction ◽  
Statistical Distribution ◽  
Point Of View ◽  
Orbital Elements ◽  
Gas Laws ◽  
History Of ◽  
Planets And Satellites ◽  
The Mean

In this paper the point of view is taken that the distribution of orbital elements in the solar system should be discussed first on a purely gravitational basis, i.e. on the basis of a set of particles entirely under gravitational interaction, before hydromagnetic and other effects are taken in consideration too. One might indeed assume that there has been a time in the history of the solar system from when on hydromagnetic and gas laws ceased to play an important role in comparison to gravity. In the epoch since that time the solar system might have developed from a set of a large number of smaller particles into the present solar system by way of transitions which these particles made to preferential orbital elements, and by accretion. Means had been found to handle the development of this set of particles under gravitational interaction, by defining the set appropriately in terms of a statistical distribution. In considering the problem of the evolution of the solar system, such a gravitational approach, which was encouraged by Einstein, seems the reasonable first step.

scholarly journals The Motions of Uranus' Satellites: Theory and Application

1979 ◽  
Vol 81 ◽  
pp. 177-180
Author(s):  
Richard Greenberg
Keyword(s):  
Solar System ◽  
Physical Properties ◽  
Celestial Mechanics ◽  
Dynamical Theory ◽  
System Study ◽  
Broad Application ◽  
Origin And Evolution ◽  
Structure And Dynamics ◽  
Principal Source ◽  
Planets And Satellites

As spacecraft and sophisticated ground-based observations measure physical properties of many planets and satellites, dynamical theory and astrometry remain a principal source of such knowledge of the Uranian system. Study of the motions of Uranus' satellites thus has broad application to planetary studies as well as to celestial mechanics. Moreover, the structure and dynamics of the system provide important cosmogonical constraints; any theory of solar system origin and evolution must account for the formation within it of analogous systems of regular satellites.

Atmospheres as a clue to the early Solar System

1988 ◽  
Vol 325 (1587) ◽  
pp. 569-582 ◽  
Keyword(s):  
Solar System ◽  
Observational Data ◽  
Terrestrial Planets ◽  
The Sun ◽  
Early Solar System ◽  
Secondary Formation ◽  
Planets And Satellites

Conditions that could have applied in the environments of the major planets when they were forming make it possible that the present icy mantles of the larger satellites were then oceans and vapour atmospheres encasing silicate—ferrous cores. The major constituents are explored by comparison with the present atmospheres of the terrestrial planets. It is further suggested that the primary condensations during the formation of the Solar System were the Sun and the major planets, and that the terrestrial planets and satellites were a secondary formation. Some observational data are offered in support of the arguments and future tests are suggested.

On the mean oxygen isotope composition of the Solar System

Icarus ◽  
2007 ◽  
Vol 186 (2) ◽  
pp. 562-570 ◽  
Author(s):  
M. Ozima ◽  
F.A. Podosek ◽  
T. Higuchi ◽  
Q.-Z. Yin ◽  
A. Yamada
Keyword(s):  
Solar System ◽  
Oxygen Isotope ◽  
Isotope Composition ◽  
Oxygen Isotope Composition ◽  
The Mean

scholarly journals On the regularities of the mean distances of secondary bodies in the solar system

2000 ◽  
Vol 19 (2) ◽  
pp. 177-190
Author(s):  
Z. Zawisławski ◽  
W. Kosek ◽  
J. Leliwa-kopystyński
Keyword(s):  
Solar System ◽  
The Mean

scholarly journals Possible Features of IAU Standards

1992 ◽  
Vol 9 ◽  
pp. 155-159
Author(s):  
P. K. Seidelmann
Keyword(s):  
Solar System ◽  
Internal Consistency ◽  
Working Group ◽  
The Past ◽  
Cartographic Coordinates ◽  
Planets And Satellites ◽  
Standard Values ◽  
Best Estimates

In the past, the IAU has adopted standard values for some constants, primarily for use with solar system ephemerides. The constants adopted in 1976 were specifically adjusted to provide internal consistency. In each case, when constants have been adopted, the changes have reflected accuracy improvements, and the purpose has been to encourage the accomplishment of better science.Over the past 12 years, the Working Group on Cartographic Coordinates has issued triennial reports giving the best values for the sizes and rotations for the planets and satellites. This working group now is an IAU/IAG/COSPAR working group reflecting the different organizations that have recognized the benefits of this group. This is an example of a properly functioning working group, which provides the best values on a regular basis. The IUGG also provides best estimates triennially for values of interest in geodesy and geodynamics.

Energy Changes of Cosmic Rays

1978 ◽  
Vol 3 (3) ◽  
pp. 233-234
Author(s):  
L. J. Gleeson ◽  
G. M. Webb
Keyword(s):  
Cosmic Rays ◽  
Solar System ◽  
Density Gradient ◽  
Cosmic Ray ◽  
Integral Form ◽  
Rate Of Change ◽  
Number Density ◽  
Ray Density ◽  
The Mean

Recently (Gleeson (1972), Quenby (1973), Gleeson and Webb (1974, 1978)) it has been shown that the mean rate of change of momentum of cosmic rays reckoned for a volume fixed in the solar system iswhere G = (1/Up)(∂Up/∂r)si the cosmic-ray density gradient with Up, the differential number density with respect to momentum p at position r. (cf also the integral form of (1) by Jokipii and Parker 1967).

scholarly journals Does the energy density of the vacuum influence planetary motions?

1986 ◽  
Vol 114 ◽  
pp. 417-418
Author(s):  
R. Shubert
Keyword(s):  
Energy Density ◽  
Solar System ◽  
Gravitational Force ◽  
Quantum Mechanical ◽  
Planets And Satellites

New cosmological and quantum mechanical evidence for the existence of an ether has made it appropriate to investigate again the effect of such a medium upon the motions of planets and satellites within the solar system. The properties of a medium of this kind are as yet unknown except that it may be the ultimate origin of inertia and therefore that it may have a fundamental link to the gravitational force.

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