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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, Harald Hoffmann
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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
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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
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Journal of Geophysical Research E: Planets, 2021 International audienceWe characterize the solar wind proton reflection (backscattering) from Phobos using a series of Mars Express operations. The plasma data obtained during the Phobos flyby of Mars Express in January 2016 showed a non-solar wind signal
Mats Holmström, Yoshifumi Futaana
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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
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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
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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
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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
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Nature, 1969
THERE have been several attempts to explain the large secular acceleration of the motion of Phobos (the closer of the two satellites of Mars) that was derived by Sharpless1 by fitting a quadratic expression for the mean longitude to five selected groups of orbital elements covering the period 1879 to 1941.
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THERE have been several attempts to explain the large secular acceleration of the motion of Phobos (the closer of the two satellites of Mars) that was derived by Sharpless1 by fitting a quadratic expression for the mean longitude to five selected groups of orbital elements covering the period 1879 to 1941.
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Icarus, 1979
The Viking Orbiters have obtained several images of Phobos at large phase angles in which the portion of the satellite not directly illuminated by the sun is faintly visible. A photometric analysis of one such image is presented to prove that the phenomenon is real and can be explained by Marsshine (i.e., the illumination of Phobos by sunlight ...
J. Goguen, J. Veverka, T. Duxbury
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The Viking Orbiters have obtained several images of Phobos at large phase angles in which the portion of the satellite not directly illuminated by the sun is faintly visible. A photometric analysis of one such image is presented to prove that the phenomenon is real and can be explained by Marsshine (i.e., the illumination of Phobos by sunlight ...
J. Goguen, J. Veverka, T. Duxbury
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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
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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
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Solar System Research, 2004
The available experimental data and theoretical reasons allow us to point out only the upper limit of Phobos' magnetic moment, which does not exceed 1018 G cm3.
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The available experimental data and theoretical reasons allow us to point out only the upper limit of Phobos' magnetic moment, which does not exceed 1018 G cm3.
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