Phobos mars moon facts

Phobos, mars moon
As we know that the Mars planet has two moons revolving around named as Phobos and Deimos. As compare with the moon Deimos, Phobos is larger than Deimos as well as it is closer to the planet too. Phobos is irregular in shape with mean radius of 11 km and it is seven times more massive than outer moon Deimos. These two natural satellites/moons of mars planet was discovered on 18 August 1877 by astronomer Asaph Hall at the United States Naval Observatory in Washington D.C. Astronomer also discovered Deimos (another moon of mars) on 12 August 1877. The name of Phobos is taken from Greek god Phobos, a son of Ares (Mars) and Aphrodite (Venus) which was the personification of Horror. From the surface of mars planet the Phobos orbits is only about 6,000 km (3700 mile) which is one and only closer moon known planetary moon. And most amazing thing about Phobos moon is it orbits the Mars planet faster than the planet itself rotates. Moon makes one complete orbit in 7 hours and 39 minutes. Due to which the moon appears to rise twice each Martian day. From the surface of the mars it appears to rise in the west and move across the sky in 4 hours and 15 minutes or less than that & set in the east. According to the research it is found that Phobos moon will collide with the planet or will break up into a planetary ring in 50 millions because of the tidal interaction due to which the moon is heading closer to the planet by one meter every century. It has −4 °C (25 °F) on sunlit and −112 °C (−170 °F) on shadowed side. This moon of the mars is one of the least reflective bodies in our solar system and features a large impact crater, Stickney.

Physical Characteristics of Mars Planet Moon Phobos:
If we see the physical character of the moon Phobos than it has dimension of 27 x 22 x 18 km & is too small to be rounded under its own gravity. As we already know that it is least reflective bodies in our solar system; due to the low mass and low gravity it doesn’t have an atmosphere. It is heavily cratered. Moon seems to be similar to the D-type asteroid & is apparently of composition similar to carbonaceous chondrite material. The density of Phobos is too low to be solid rock and known to have significant porosity. Due to all these suggestion and research it is suggested that it might have substantial reservoir of ice. The observation also suggests and indicates that the surface regolith layer lacks hydration but the ice below the regolith is not ruled out.


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