This page shows information about planetary bodies named by the IAU Working Group for Planetary System Nomenclature (WGPSN), and about bodies named by the IAU Committee on Small Body Nomenclature that have surface features named by the WGPSN. Solar System → Local Interstellar Cloud → Local Bubble → Gould Belt → Orion Arm → Milky Way → Milky Way subgroup → Local Group → Local Sheet → Virgo Supercluster → Laniakea Supercluster → Observable universe → UniverseEach arrow (→) may be read as "within" or "part of". Named after the Roman god of the underworld who was able to render himself invisible. Discovered orbiting in the Keeler gap in Saturn's A ring. Io, the daughter of Inachus, was changed by Jupiter into a cow to protect her from Hera's jealous wrath. En 1752, Voltaire mentionne lui aussi l'existence de ces satellites dans Micromégas. Comparison - Phobos (top) and Deimos (bottom) (2005). First reported (though with an incorrect orbital period) and named by A. Dollfus from observations in Dec. 1966, this satellite was finally confirmed in 1980. When did organ music become associated with baseball? Chapman, and D.C. Slater. Buie, W.J. Son of Hermes, brother of Pan, and decendant of the Titans. She was transformed into the night bird called Chalkis, and Clymenus hanged himself. Les deux lunes de Mars, Phobos et Deimos orbitent près de la planète, à quelques milliers de kilomètres de celle-ci. Most of its satellites were named for Titans who, according to Greek mythology, were brothers and sisters of Saturn. This outer Martian satellite was named for one of the horses that drew Mars' chariot; also called an "attendant" or "son" of Mars, according to chapter 15, line 119 of Homer's "Iliad." , Missions are ordered by launch date.  However, the view of most astronomers is that Swift was simply employing a common argument of the time, that as the inner planets Venus and Mercury had no satellites, Earth had one and Jupiter had four (known at the time), that Mars by analogy must have two. ), H.A. (Load the image in full size to see both Moons of Mars. ", Named by Herschel's son John in early 19th century for the queen of the fairies in Shakespeare's "A Midsummer Night's Dream. Scotti, T.B. Furthermore, as they had not yet been discovered, it was reasoned that they must be small and close to Mars. Daughter of Haumea, water spirit in Hawaiian mythology.  The high porosity of the interior of Phobos (based on the density of 1.88 g/cm3, voids are estimated to comprise 25 to 35 percent of Phobos' volume) is inconsistent with an asteroidal origin. Besides being small, Phobos and Deimos are also irregularly shaped and resemble asteroids more than moons. This Greek word means "flight.". Beautiful daughter of Lycaon, she was seduced by Jupiter, who changed her into a bear to protect her from Hera's jealousy. Compared to the Earth's Moon, the moons Phobos and Deimos are small.  On 12 August 2005, NASA launched Mars Reconnaissance Orbiter (MRO). Satellites in the uranian system are named for characters from Shakespeare's plays and from Pope's "Rape of the Lock.". Mars’ natural satellites are Deimos and Phobos, the Ancient Greek names of the sons of Ares, God of War. Les périodes de révolution réelles correspondantes sont 7 h 39 min et de 30 h 18 min. Satellites in the neptunian system are named for characters from Greek or Roman mythology associated with Neptune or Poseidon or the oceans. ", Wife of Othello in Shakespeare's "Othello, the Moor of Venice.  Several strings of craters on the Martian surface, inclined further from the equator the older they are, suggest that there may have been other small moons that suffered the fate expected of Phobos, and that the Martian crust as a whole shifted between these events.