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29 lis 2021 · Imaging data reveals a low albedo of both moons – Phobos: ∼0.07; Deimos: ∼0.08. Also, Phobos manifests distinct redder and bluer units, whereas the surface of Deimos is globally comparable to the Phobos redder units with localized streaks of brighter material.
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.
18 kwi 2018 · We find that forming Phobos-Deimos requires an oblique impact by a Vesta-to-Ceres sized object with ~10 −3 times Mars’ mass, a much less massive impactor than previously considered. INTRODUCTION Unlike the Moon, whose mass is about 1% of the mass of the Earth, the combined mass of Phobos and Deimos is only M PD = 2 × 10 −8 M M , where M ...
1 gru 2021 · Imaging data reveals a low albedo of both moons – Phobos: ∼0.07; Deimos: ∼0.08. Also, Phobos manifests distinct redder and bluer units, whereas the surface of Deimos is globally...
Deimos’ density (1.471±0.166 g/cm3) is lower than Phobos’s (1.876 g/cm3). And while Deimos is uniformly dark red, Phobos presents two spectral units: a “Redder Unit” (similar to Deimos) dominating most of Phobos (> 65%), and a “Bluer Unit” (red also, but less so than Dei-mos) of more limited surface extent (< 35%).
8 gru 2017 · 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, Deimos, is only...
15 maj 2015 · Additionally, accretion in more massive disks (> 10 18 kg) could produce satellites larger in size than Phobos or Deimos (Rosenblatt and Charnoz, 2012); however, these satellites could eventually de-orbit and impact Mars, depending on where they form in the disk.
