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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.
18 kwi 2018 · INTRODUCTION. Unlike the Moon, whose mass is about 1% of the mass of the Earth, the combined mass of Phobos and Deimos is only MPD = 2 × 10 −8 MM, where MM = 6.4 × 10 26 g is Mars’ mass. How Phobos and Deimos formed remains uncertain.
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.
Phobos is a bit larger than Deimos, and orbits only 3,700 miles (6,000 kilometers) above the Martian surface. No known moon orbits closer to its planet. It whips around Mars three times a day, while the more distant Deimos takes 30 hours for each orbit.
15 maj 2015 · Although the two moons of Mars, Phobos and Deimos, have long been thought to be captured asteroids, recent observations of their compositions and orbits suggest that they may have formed from debris generated by one or more giant impacts of bodies with ∼0.01× target mass.
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 8...
22 lut 2021 · For Phobos, \({{\Delta }}{e}_{2:1}^{{\rm{Mars}}}=0.032\), \({{\Delta }}{e}_{3:1}^{{\rm{Mars}}}=0.002\) and \({{\Delta }}{e}_{1:1}^{{\rm{Sun}}}=0.0085\), whereas for Deimos, \({{\Delta...
