Porosity of phobos

Author: bpen

August undefined, 2024

WebThe high porosity of the interior of Phobos (based on the density of 1.88 g/cm 3, voids are estimated to comprise 25 to 35 percent of Phobos's volume) is inconsistent with an … WebNov 23, 2015 · Its high porosity (for example, ref. 13) and hypothesized origin as a captured asteroid 69 or gravitational aggregate 51,70,71,72 imply Phobos is likely to be highly heterogeneous (possibly ...

Observations of Phobos and Deimos with SpeX at NASA

WebJan 1, 2013 · Phobos' estimated macroporosity of 12-20% is consistent with a fractured but coherent interior; Deimos' estimated macroporosity of 23-44% is more consistent with a … WebFeb 1, 2007 · Phobos may have few particles smaller than 30 μm, while Deimos can have particles down to ∼ 15 μm. 20 μm grains are small enough for electrostatic repulsion to possibly become significant enough to increase regolith porosity. Also, Deimos re-accretes any dust grains more efficiently than Phobos. fisher and paykel parts online

The demise of Phobos and development of a Martian ring system

WebPhobos, the 22-km diameter innermost moon of Mars, is a groovy body. ... Phobos has a near-surface porosity of at least 40%, so it seems impossible to sustain 2/5. WebMar 18, 2024 · Using a soft-sphere discrete element code, PKDGRAV 16,17, we set up simulations of a 1.5 m by 1.2 m regolith bed with a porosity of 45% settled in Phobos gravity (≃ 5 mm s −2) and made up of ... WebThe polar body, with haploid DNA, is a small cell produced during the meiosis of an oocyte. Here, we describe the detailed procedures for the detection of the second polar body in … fisher and paykel parts melbourne

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Internal Characteristics of Phobos and Deimos from Spectral

The high porosity of the interior of Phobos (based on the density of 1.88 g/cm 3, voids are estimated to comprise 25 to 35 percent of Phobos's volume) is inconsistent with an asteroidal origin. [27] Observations of Phobos in the thermal infrared suggest a composition containing mainly phyllosilicates, which are well … See more Phobos 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. It is named after Phobos, … See more The orbital motion of Phobos has been intensively studied, making it "the best studied natural satellite in the Solar System" in terms of orbits completed. Its close orbit around Mars produces some unusual effects. With an altitude of 5,989 km (3,721 mi), … See more Launched missions Phobos has been photographed in close-up by several spacecraft whose primary mission has been to … See more Phobos is synchronously orbiting Mars, where the same face stays facing the planet at 6,000 km (3,700 mi) above the Martian surface. A space elevator could extend down from Phobos to Mars 6,000 km, about 28 kilometers from the surface, and just out of the … See more Phobos was discovered by astronomer Asaph Hall on 18 August 1877 at the United States Naval Observatory in Washington, D.C., at about 09:14 Greenwich Mean Time. (Contemporary … See more Phobos has dimensions of 27 km × 22 km × 18 km, and retains too little mass to be rounded under its own gravity. Phobos does not have an atmosphere due to its low mass and low gravity. It is one of the least reflective bodies in the Solar System, with an albedo of about … See more The origin of the Martian moons is still controversial. Phobos and Deimos both have much in common with carbonaceous C-type asteroids, with spectra, albedo, and density very … See more WebJan 1, 2024 · Phobos' spectra showed significant slope variation at shorter wavelengths (λ < 1.3 μm), suggesting surface heterogeneity possibly due to regolith's composition and grain size, and/or space weathering. Deimos' spectra indicated the presence of water/hydroxyl with a band depth at 2.90 μm of 4–5%. fisher and paykel parts nzWebMay 7, 2010 · The porosity of Phobos is computed from its mass, its bulk density and known grain densities of the hydrous chondrites of the CM group and the Tagish-Lake meteorite … canada post flyer delivery service

"WebPhobos is the larger of the two moons, and is the closer of the two to Mars. Phobos has an average radius of 11 km, while Deimos has an average radius of 6 km. The origin of Mars' moons, Phobos and Deimos (pictured right), is unknown and remains controversial. One theory is that the moons are captured asteroids. " - Porosity of phobos

Observations of Phobos and Deimos with SpeX at NASA

The demise of Phobos and development of a Martian ring system

Porosity of phobos

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