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Styx, Nix, and Hydra are thought to be in a 3-body Laplace orbital resonance with orbital periods in a ratio of 18:22:33. [18] [19] The ratios should be exact when orbital precession is taken into account. Nix and Hydra are in a simple 2:3 resonance.
Nix is a natural satellite of Pluto, with a diameter of 49.8 km (30.9 mi) across its longest dimension. [3] It was discovered along with Pluto's outermost moon Hydra on 15 May 2005 by astronomers using the Hubble Space Telescope, [1] and was named after Nyx, the Greek goddess of the night. [10]
With the other moons Nix, Kerberos, and Hydra, it forms part of an unusual 1:3:4:5:6 (period ratio) sequence of near resonances. [11] In contrast to the orbit, Stygian rotation is chaotic; like the other small Plutonian moons, Styx is not tidally locked, and its rotation varies over short timescales (at a rate of about 3.239 days at the time of ...
Examples of chaotic rotation include Hyperion, [2] a moon of Saturn, which rotates so unpredictably that the Cassini probe could not be reliably scheduled to pass by unexplored regions, [3] and Pluto's Nix, Hydra, and possibly Styx and Kerberos, and also Neptune's Nereid. [4]
A sex offender who police said tried to "financially and emotionally manipulate" his victims has been jailed for 25 years. Stephen Gallagher, of Normandy Avenue in Colchester, was found guilty by ...
Hydra was discovered along with Nix by astronomers using the Hubble Space Telescope on 15 May 2005, [1] and was named after the Hydra, the nine-headed underworld serpent in Greek mythology. [14] By distance, Hydra is the fifth and outermost moon of Pluto, orbiting beyond Pluto's fourth moon Kerberos .
A couple in Australia have been accused of faking their young son's cancer diagnosis "It will be alleged that the accused shaved their 6-year-old child’s head, eyebrows, placed him in a ...
Entering Week 16 of the 2024 season, the Las Vegas Raiders have the first overall pick in the 2025 NFL draft.They're one of two 2-12 teams, along with the Giants, but are favored this week against ...