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Phobos and Deimos (both found in 1877, more than a century after Swift's novel) have actual orbital distances of 1.4 and 3.5 Martian diameters, and their respective orbital periods are 7.66 and 30.35 hours.
Deimos (/ ˈ d aɪ m ə s /; systematic designation: Mars II) [11] is the smaller and outer of the two natural satellites of Mars, the other being Phobos. Deimos has a mean radius of 6.2 km (3.9 mi) and takes 30.3 hours to orbit Mars. [5] Deimos is 23,460 km (14,580 mi) from Mars, much farther than Mars's other moon, Phobos. [12]
In Hesiod's Theogony, Phobos is the son of Ares and Aphrodite, and the sibling of Deimos and Harmonia. [4] He mainly appears in an assistant role to his father and causes disorder in battle. [citation needed] In the Iliad, he accompanied his father into battle along with the goddess Eris (discord) and his brother Deimos (Dread).
Phobos is named after the Greek god of fear and panic, who is the son of Ares (Mars) and twin brother of Deimos. Phobos is a small, irregularly shaped object with a mean radius of 11 km (7 mi). It orbits 6,000 km (3,700 mi) from the Martian surface, closer to its primary body than any other known natural satellite to a planet.
This category has the following 4 subcategories, out of 4 total. D. Deimos ... Fiction set on Mars' moons (2 C, 6 P) I. Impact craters on Mars's moons (4 P) P. Phobos ...
Once in Mars orbit, PADME would carry out 16 flybys of Phobos followed by 9 flybys of Deimos. [5] Flybys would take place at two-week intervals. Flyby altitudes at closest approach to Phobos and Deimos would be ~2 km. [5] Following completion of its primary mission, PADME could remain in high Mars orbit for long-term monitoring of the martian system and search for potential additional moonlets ...
The moons' small sizes have made them unpopular settings in science fiction, [c] with some exceptions such as the 1955 novel Phobos, the Robot Planet by Paul Capon and the 2001 short story "Romance with Phobic Variations" by Tom Purdom in the case of Phobos, and the 1936 short story "Crystals of Madness" by D. L. James in the case of Deimos ...
In Hesiod's Theogony, Deimos is the son of Ares and Cytherea , and the sibling of Phobos and Harmonia. [3] According to the Greek antiquarian Semus of Delos, Deimos is the father of the monster Scylla. [4]