WebThe longitude of the ascending node (☊ or Ω) is one of the orbital elements used to specify the orbit of an object in space. It is the angle from a specified reference direction, called the origin of longitude, to the … WebPhobos, (or Mars I), is the innermost and larger of the two natural satellite orbiting the planet Mars, with the other being Deimos. Both moons were discovered in 1877 by American astronomer Asaph Hall. Phobos is a small, irregularly shaped object with a mean radius of 11 km (7 mi), and is seven times as massive as the outer moon, Deimos. Phobos is …

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WebPhobos Operations Orbit: 5981 km circular orbit 1 deg, 0.32 day period Notional Phobos Heat Shield Additive Fabrication Strategy 1. Capture into a I-solparking orbitwith proper plane change to Phobos inclination 2. Lower Mars Transfer Vehicle to Phobos orbit (1,437 m/s delta-v required) 3. Prepare for orbital operations 4. WebInclination – 0.93° Orbital Period – 30.312 hours Dimensions – 15 km × 12.2 km × 11 km Radius – 6.2 km Mass – 1.4762×1015 kg Volume – 998 km3 Rotation – Synchronous Temperature – ≈ 233 K (-40°F) Apparent Magnitude – 12.89 The moon Deimos is designated Mars II. It is one of the two natural satellites of Mars, the other one being Phobos. photofilmstrip

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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 similar to those of C- or D-type asteroids. Based on their similarity, one hypothesis is that both moons may be captured main-belt asteroids. Both moons have very circular orbits which lie almost exactly in Mars's equatorial plane, and hence a capture origin requires a mechanism for circularizing the initi… 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 0.071. Infrared spectra show that it has … 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 origin of the Martian moons is still controversial. Phobos and Deimos both have much in common with carbonaceous C-type asteroids, … 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., … 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 … See more Launched missions Phobos has been photographed in close-up by several spacecraft whose primary mission has been to photograph Mars. The first was Mariner 7 in 1969, followed by Mariner 9 in 1971, Viking 1 in 1977, Phobos 2 in … See more • List of natural satellites • List of missions to the moons of Mars • Phobos and Deimos in fiction See more WebTo investigate how the elastic properties of Phobos affect its librational motion, we adopted various k 2 into our numerical integration. Then the analysis was performed by iterating a … how does the python interpreter work