Results 141 to 150 of about 165,848 (175)

A Thermal Model of the Martian Satellites

Icarus, 1989
Abstract A thermal model of the Martian satellites is developed that takes into account their ellipsoidal shape, eclipse effects, the temperature dependence of the heat conduction coefficient, and the reflected and thermal radiation of Mars. Results for the diurnal temperature behavior of Phobos and Deimos for different latitudes, longitudes, and ...
Ekkehard Kührt
exaly   +2 more sources

Martian Satellite Orbits and Ephemerides

Planetary and Space Science, 2014
Abstract We discuss the general characteristics of the orbits of the Martian satellites, Phobos and Deimos. We provide a concise review of the various descriptions of the orbits by both analytical theories and direct numerical integrations of their equations of motion.
Jacobson, R.A., Lainey, V.
exaly   +4 more sources

History of Telescopic Observations of the Martian Satellites

Planetary and Space Science, 2014
Abstract This article intends to review the different studies of the Mars satellites Phobos and Deimos realized by means of ground-based telescopic observations as well in the astrometry and dynamics domain as in the physical one. This study spans the first period of investigations of the Martian satellites since their discovery in 1877 through the ...
Stéphane Erard, W Thuillot
exaly   +3 more sources

On the Orbital Evolution of the Martian Satellites

Journal of Geophysical Research: Solid Earth, 1979
The tidal evolution of the Martian satellites has been investigated, and it is found that tides raised by the planet on the satellite can have significant consequences if the rigidity of the satellites is much less than the average rigidity of Mars. This would be the case if the satellites have a carbonaceous chondritic composition. Frequency dependent
Kurt Lambeck
exaly   +2 more sources

Photometric Properties of the Martian Satellites

Icarus, 1974
New photoelectric observations yield V(1, alpha) equals 12.95 + 0.036 alpha + or - 0.05, B-V equals 0.65 + or - 0.03, and U-B equals 0.18 + or - 0.03 for Deimos and V(1, 0) equals 11.9 + or - 0.2 for Phobos. The derived geometric albedos of both satellites are near 0.065.
B.H. Zellner, R.C. Capen
exaly   +2 more sources

Orbital History of the Martian Satellites With Inferences on Their Origin

Icarus, 1980
Abstract Recent Viking results indicate the Martian satellites are composed of carbonaceous chondritic material, suggesting that Phobos and Deimos were once asteroids captured by Mars. On the other hand, the low eccentricities and inclinations of their orbits on the equator of Mars argue against that hypothesis.
Anny Cazenave
exaly   +2 more sources

Orbital Evolution and Origin of the Martian Satellites

Icarus, 1983
Abstract The role of tidal dissipation within the Martian satellite system is examined through orbital evolution integrations and assessed in the context of its origin scenario through calculations of collision probabilities between Phobos and Deimos in the distant past.
exaly   +2 more sources

GETEMME—a mission to explore the Martian satellites and the fundamentals of solar system physics

Experimental Astronomy, 2012
GETEMME (Gravity, Einstein's Theory, and Exploration of the Martian Moons' Environment), a mission which is being proposed in ESA's Cosmic Vision program, shall be launched for Mars on a Soyuz Fregat in 2020. The spacecraft will initially rendezvous with Phobos and Deimos in order to carry out a comprehensive mapping and characterization of the two ...
Oberst, Jürgen, Lainey, Valéry, Poncin-Lafitte, Christophe Le, Dehant, Veronique, Rosenblatt, Pascal, Ulamec, Stephan, Biele, Jens, Spurmann, Jörn, Kahle, Ralph, Klein, Volker, Schreiber, Ulrich, Schlicht, Anja, Rambaux, Nicolas, Laurent, Philippe, Noyelles, Benoît, Foulon, Bernard, Zakharov, Alexander, Gurvits, Leonid, Uchaev, Denis, Murchie, Scott, Reed, Cheryl, Turyshev, Slava, Gil, Jesus, Graziano, Mariella, Willner, Konrad, Wickhusen, Kai, Pasewaldt, Andreas, Wählisch, Marita, Hoffmann, Harald   +28 more
openaire   +7 more sources

Testing General Relativity With Landers on the Martian Satellite Phobos

Advances in Space Research, 1989
A planned experiment to obtain range and Doppler data with the Phobos 2 Lander on the surface of the Martian satellite Phobos is described. With the successful insertion on January 29, 1989 of Phobos 2 into Mars orbit, it is anticipated that the Lander will be placed on the surface of Phobos in April 1989.
J G Williams, J D Anderson, R A Preston
exaly   +2 more sources

GETEMME – A Mission to Explore the Martian Satellites and the Limits of Solar System Physics [PDF]

, 2011
We propose a mission to Mars and its satellites Phobos and Deimos, within the ESA COSMIC VISION program. A spacecraft (S/C) shall deploy retroreflectors on each satellite. These reflectors will act as targets for laser ranging from a Martian orbit for a wide range of science applications in Solar System Dynamics and Fundamental Physics.
Oberst, Jürgen, Lainey, Valéry, Le Poncin-Laffite, Christophe   +2 more
core   +6 more sources