... 8, ``Celestial Mechanics'', 2002 The Lyapunov spectra in spin--orbit dynamics V. V. Kouprianov, I. I. Shevchenko Pulkovo Observatory, St. Petersburg, Russia We study the problem of the chaotic rotation of a minor planetary satellite around its mass center, in the planar and spatial settings. ... The rest of the satellites in our set rotate regularly in synchronous resonance; but, in any case, each of them had passed through the stage of chaotic rotation. ...

Next: J.G. Doyle Up: A. Christou Previous: Meteors in Planetary Atmospheres Contents . Collaborative work on the dynamics of co-orbitals of the Saturnian moons has continued throughout the year, with Fathi Namouni (Observatoire de la C?te d'Azur, Nice, France) and Maria Helena Moreira Morais (Observat?rio Astron?mico de Coimbra, Santa Clara, Portugal). ... During the year, we have successfully modified the MERCURY integrator to simulate the tidal evolution of such orbits. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

. The XMM-Newton website has moved to the following location: . http://www.cosmos.esa.int/web/xmm-newton

... galaxies: bulges galaxies: clusters: general galaxies: clusters: individual: . ... star formation statistics stellar content structure Cosmology ( cosmology :) cosmic background radiation ( cosmology :) cosmological parameters cosmology : miscellaneous cosmology : observations cosmology : theory ( cosmology :) dark ages, reionization, first stars ( cosmology :) dark energy ( cosmology :) dark matter ( cosmology :) diffuse radiation ( cosmology :) distance scale ( cosmology :) early Universe (...

Proposal Identification No.: ... Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Planetary Radar Solar System 41.25 Hours 3.0 hours Arecibo radar ranging measurements of the Galilean satellites Our ob jective is to use radar ranging measurements of the Galilean satellites in order to detect orbital changes due to their tidal interaction with Jupiter. ...

You can also see this page in Russian with using KOI8 (X Windows) or CP1251 (MS Windows) Cyrillic coding. The Laboratory supports the space TV experiments, mainly in the planetary exploration missions. ... Image Co-registration . ... PHOBOS mission - Martian satellites investigations. Phobos on the Martian limb, the image from Phobos-2 probe from 02/28/89. ... Russian Space Bulletin. ... Last modified at June,26 1997 Alexey Kuzmin: akuzmin@mx.iki.rssi.ru . Back to IKI home page ...

MATHEMATICAL MODELING: . ... This model is developed on the base of the probabilistic description of the collisional aeronomical processes and is realized on a computer as the numerical system (stochastic model). ... Shematovich, V.I., Bisikalo , D.V.             Nonequilibrium processes in the planetary and cometary atmospheres. ... In Russian) . ... Piarnpuu , A. A.; and Shematovich, V. I.       Construction of structural stochastic models of collision processes in rarefied gas media (abstract) . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...

Analysis of general features of the chaotic system behavior and investigation of the properties of concrete chaotic sources. ... Analysis of information properties of chaotic systems and chaotic oscillations as concrete objects for information processing and comunications. ... This hypothesis gives a possibility of designing simple mathematical structures accomplishing various processes of information processing using chaos. ... Activities | ... E-mail: chaos@mail.cplire.ru ...

. Skip Navigation (press 2) . Home . Research . Tools . Curriculum Vitae . Publications . About Me . The WIRED Survey . ISM Interaction Models . White Dwarf Spectra . Presentation Slides . An image of G29-38, taken with NICMOS, that shows light from the star (left) and the same light subtracted using ADI. An artificial companion has been inserted 30 AU away that has the equivalent brightness to an object with 5 times the mass of Jupiter.

... This form allows you to query a database containing planetary data. Simply select the fields for the information desired. Select type of data to use: . Sun, Planets & Satellites Planets Only Satellites Only . ... Radius Mass Density Orbital Period Inclination . Tilt of Axis Eccentricity Escape Velocity Rotational Period . Albedo Mean Orbital Velocity Discoverer . ... Select the information to be included: . ... Rotational Period Albedo Mean Orbital Velocity Discoverer . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Planets . ... This bizarrely shrunken planetary system was found by NASAтАЩs Kepler mission, hence the parent star has been named Kepler-11. ... Planetary scientist and Kepler science team member Jack Lissauer said ?These six planets are mixtures of rock and gases, possibly including water.тАЭ €аNone of these strange new worlds are likely to be home to any form of life; their surface conditions are simply too extreme. ...

International Workshop NAROO-GAIA "A new reduction of old observations in the Gaia era", Paris Observatory, June 20-22, 2012 Registration of participants of Workshop NAROO-GAIA Before the first meeting OPENING OF THE WORKSHOP The natural planetary satellites are observed since centuries in order to understand their dynamics and their evolution. ... Science results, reports, data mining. ... L. Beauvalet: Strong need of a new reduction of Pluto's old observations W.Thuillot: very important. ...

... 2005 Some important issues Europa moves relative to magnetospheric magnetic field with velocity ~ 105 km/sec (subsonic velocity ) Europa has induced magnetosphere and Alfven wings Europa has atmosphere (51014 cm-2) and ionosphere (~103 ­ 104 cm-3) Energetic particles hit Europa's surface that leads to sputtering rate of ~31027 molecules/sec Europa is an important source of neutrals particles (50kg of 2) and ionized ...

Raquel Salmeron The mechanism(s) responsible for generating the angular momentum transport required for star/planet formation remain poorly understood. ... In recent times it has been realised that the answer may lie in the complex interaction of gas and magnetic fields present in the flattened disc of material that surrounds the star in formation (e.g., Balbus Hawley 1998) . ... COALA : Universe Galaxy AGN Star Planet ...

... Research . Projects . ... The name of the project APEX is a reduction from words " Active Plasma Experiments " . The core of the project are active experiments with injection of electron and (or) plasma beams from a board of the satellite with simultaneous registration of the phenomena, produced by interaction of injected beam with background plasma. ... Active experiments utilise modulated electron beam accelerator and source of modulated xenon plasma beam on the main spacecraft APEX. ...

. Russian . English .

... The Main Problems of the Course. ... Some Knoleges from Mechanics, the Main Dynamics Equations for Bodies of Variable Mass, Meshchersky Equation. ... Rocket Motion on Powered Trajectory. ... The Law of Attracting Centre Distance Change. ... The Main Integrals of Motion. Satellite Orbit Equation, Motion Velocity, Orbital Period. ... Forces Affecting on the Artificial Satellites of the Earth. ... Influence of Planet Oblateness on Satellite Motion, Influence of Atmospheric Braking on Satellite Orbit. ...

... Satellites of the planets are assigned a provisional designation (indicating year of discovery) by the Central Bureau for Astronomical Telegrams ( CBAT ) upon satisfactory demonstration of the existence of a new object. ... In the past, Comets were first given a provisional designation, consisting of the year and a lowercase letter indicating the order of discovery in the year (e.g., 1994a was the first comet discovered or recovered in 1994, 1994b the second, etc.) ... Names .. ...