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29 lis 2021 · A mass of 10 \ (^ {18}\text { kg}\) is far greater than the combined mass of Deimos and Phobos (∼1.21 x 10 \ (^ {16}\text { kg}\) – Rosenblatt 2011). Accounting for the excess mass of the accretion disk, most material deorbits to Mars (Rosenblatt and Charnoz 2012).
Phobos is the larger of Mars' two moons and is 17 x 14 x 11 miles (27 by 22 by 18 kilometers) in diameter. It orbits Mars three times a day, and is so close to the planet's surface that in some locations on Mars it cannot always be seen.
8 gru 2017 · Identity crisis. Phobos and Deimos bear more resemblance to asteroids than to Earth's moon. Both are tiny — the larger, Phobos, is only 14 miles across (22 kilometers), while the smaller,...
Phobos (/ ˈ f oʊ b ə s /; systematic designation: Mars I) is the innermost and larger of the two natural satellites of Mars, the other being Deimos. The two moons were discovered in 1877 by American astronomer Asaph Hall .
The largest crater on Deimos is approximately 1.4 miles (2.3 km) in diameter, 1/5 the size of the largest crater on Phobos. Although both moons are heavily cratered, Deimos has a smoother appearance caused by the partial filling of some of its craters.
10 sie 2022 · Our preliminary laboratory measurements confirm that the red unit of Phobos and most of the surface of Deimos can be associated with samples characterized by an higher presence of dark components (e.g. SAC) or minerals produced by space weathering (e.g. iron-nickel metal and iron sulphide).
I will present our best current understanding of the composition of Phobos and Deimos, focusing on visi-ble and near-infrared spectroscopy, and the implica-tions possible compositions have for the origin of the satellites. I will also discuss the prospects for future measurements.
