Mars has two known satellites, Phobos and Deimos ("fear" and "panic", after attendants of Ares, the Greek god of war, equivalent to the Roman Mars). Searches for more satellites have been unsuccessful, putting the maximum radius of any other satellites at 90 m (100 yd)
In Greek mythology, Deimos (Ancient Greek: Δεῖμος, pronounced [dêːmos], meaning "dread") was the personification of terror.
Phobos (Ancient Greek Φόβος, pronounced [pʰóbos], meaning "terror") is the personification of horror in Greek mythology. He is the offspring of Ares and Aphrodite. He was known for accompanying Ares into battle along with his brother, Deimos, the goddess Enyo, and his father’s attendants. Timor is his Roman equivalent. Considering the accounts in Greek mythology, Phobos is more of a personification of the fear brought by war and does not appear as an actual character in any mythology.