Results 161 to 170 of about 3,391 (216)
BroadSCOPE: An Optical Broadband Seismic Sensor for Planetary Exploration. [PDF]
Space Sci RevMarusiak AG +19 more
europepmc +1 more source
Phobos-Grunt experiments to measure Phobos' librations
, 2011 In the frame of the Russian Phobos-Grunt mission, Phobos librations will be measured with enough precision such that crucial constraints will be obtained on the geophysical properties of its interior, offering key information on its origin [1]. This study assess the precision that can be obtained on Phobos physical librations and discuss the knowledge ...
Le Maistre, Sébastien +5 more
core +3 more sources
Spacecraft Exploration of Phobos and Deimos [PDF]
Planetary and Space Science, 2014 We review the previous exploration of Phobos and Deimos by spacecraft. The first close-up images of Phobos and Deimos were obtained by the Mariner 9 spacecraft in 1971, followed by much image data from the two Viking orbiters at the end of the 70s, which
Alexander Zakharov +2 more
exaly +2 more sources
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Advances in Space Research, 1992
Abstract For the first time the tri-axial ellipsoid was used as the reference surface for map and globe compiling. The coordinate systems were modified. The new cartographic projections were calculated.
L.M. Bugaevsky +2 more
openaire +1 more source
Abstract For the first time the tri-axial ellipsoid was used as the reference surface for map and globe compiling. The coordinate systems were modified. The new cartographic projections were calculated.
L.M. Bugaevsky +2 more
openaire +1 more source
The Phobos Geodetic Control Point Network and Rotation Model
Planetary and Space Science, 2014 A new global control point network was derived for Phobos, based on SRC (Mars Express), Phobos-2, and Viking Orbiter image data. We derive 3-D Cartesian coordinates for 813 control points as well as improved pointing data for 202 SRC and Viking images in
Nicolas Rambaux +2 more
exaly +2 more sources
Science, 1989
Radar echoes from the martian satellite Phobos provide information about that object's surface properties at scales near the 3.5-cm observing wavelength. Phobos appears less rough than the moon at centimeter-to-decimeter scales. The uppermost few decimeters of the satellite's regolith have a mean bulk density within 20% of 2.0 g cm
S J, Ostro +4 more
openaire +2 more sources
Radar echoes from the martian satellite Phobos provide information about that object's surface properties at scales near the 3.5-cm observing wavelength. Phobos appears less rough than the moon at centimeter-to-decimeter scales. The uppermost few decimeters of the satellite's regolith have a mean bulk density within 20% of 2.0 g cm
S J, Ostro +4 more
openaire +2 more sources
Slope variations on the surface of phobos
Planetary and Space Science, 1991The published version is located at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V6T-46YK45Y-1W3&_user=1516330&_coverDate=02%2F28%2F1991&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_searchStrId=1746031192&_rerunOrigin=google&_acct=C000053443&_version=1 ...
MUINONEN, K +2 more
openaire +3 more sources
Interpretation of the surface brightness of Phobos
Planetary and Space Science, 1991Analysis of disk resolved images of Phobos obtained by the Phobos 2 spacecraft allows us to study the surface scattering law and albedo variations. From low phase angle images we find variations in local geometric albedo 10%, with a correlation length 1km. The scattering law is reasonable well matched by the recent proposed LPI (Lumme et al.
PELTONIEMI, JI +2 more
openaire +3 more sources
2015
Once the Galilean satellites of Jupiter were discovered and the Copernican model of the solar system became widely accepted, Mars’ apparent lack of a moon was notable. By the end of the seventeenth century, Saturn was known to have at least five satellites, a number that swelled to seven by the end of the eighteenth century.
S. L. Murchie +3 more
openaire +2 more sources
Once the Galilean satellites of Jupiter were discovered and the Copernican model of the solar system became widely accepted, Mars’ apparent lack of a moon was notable. By the end of the seventeenth century, Saturn was known to have at least five satellites, a number that swelled to seven by the end of the eighteenth century.
S. L. Murchie +3 more
openaire +2 more sources