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Phobos was the primary object of study for the Phobos 1 spacecraft. Phobos 1 was an uncrewed Soviet space probe of the Phobos Program launched from the Baikonour launch facility on 7 July 1988. [1] Its intended mission was to explore Mars and its moons Phobos and Deimos. The mission failed on 2 September 1988 when a computer malfunction caused ...
The Phobos program (Russian: Фобос, Fobos, Greek: Φόβος) was an uncrewed space mission consisting of two probes launched by the Soviet Union to study Mars and its moons Phobos and Deimos. Phobos 1 was launched on 7 July 1988, and Phobos 2 on 12 July 1988, each aboard a Proton-K rocket. [1] Phobos 1 suffered a terminal failure en route ...
Given Phobos' irregular shape and assuming that it is a pile of rubble (specifically a Mohr–Coulomb body), it will eventually break up due to tidal forces when it reaches approximately 2.1 Mars radii. [60] When Phobos is broken up, it will form a planetary ring around Mars. [61] This predicted ring may last from 1 million to 100 million years.
This is a list of space probes that have left Earth orbit (or were launched with that intention but failed), organized by their planned destination. It includes planetary probes, solar probes, and probes to asteroids and comets, but excludes lunar missions, which are listed separately at List of lunar probes and List of Apollo missions.
Phobos 1: Mars: Failure: Phobos 1 orbiter and lander Soviet Union: Phobos 2: Mars: Failure: Phobos 2 flyby and lander Israel: Ofeq 1: Earth: Success: Ofeq 1 first Israeli satellite, first satellite to be launched in retrograde orbit 1989 US: Magellan: Venus: Success: Magellan orbiter launched which mapped 99 percent of the surface of Venus (300 ...
Fobos-Grunt was an intended interplanetary probe that included a lander to study Phobos and a sample return vehicle to return a sample of about 200 g (7.1 oz) of soil to Earth. [1] It was also to study Mars from orbit, including its atmosphere and dust storms, plasma and radiation.
Phobos has a diameter of 22.2 km (13.8 mi) and a mass of 1.08 × 10 16 kg, while Deimos measures 12.6 km (7.8 mi) across, with a mass of 1.5 × 10 15 kg. Phobos orbits closer to Mars, with a semi-major axis of 9,377 km (5,827 mi) and an orbital period of 7.66 hours; while Deimos orbits farther with a semi-major axis of 23,460 km (14,580 mi) and ...
Phobos (Greek for "fear") most commonly refers to: Phobos (moon), a moon of Mars; Phobos (mythology), the Greek god and personification of fear and panic;