Hydra (moon) - Wikipedia
WEBIt is the second-largest moon of Pluto, being slightly larger than Nix. 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]
Hydra - NASA Science
WEBHydra is the outer of the two moons discovered orbiting Pluto in 2005. Nix and Hydra are roughly 5,000 times fainter than Pluto and are about two to three times farther from Pluto than its large moon, Charon, which was discovered in 1978. Nix and Hydra are roughly 20 to 70 miles (32 to 113 km) wide.
Pluto Moons: Facts - NASA Science
WEBPluto's moon system – Charon, Nix, Hydra, Styx, and Kerberos – is believed to have formed after a collision between Pluto, and another Kuiper Belt Object early in the history of the solar system. The smashup flung material that coalesced into the family of satellites observed around Pluto.
Moons of Pluto - Wikipedia
WEBPluto's four small circumbinary moons orbit Pluto at two to four times the distance of Charon, ranging from Styx at 42,700 kilometres to Hydra at 64,800 kilometres from the barycenter of the system. They have nearly circular prograde orbits in the same orbital plane as Charon.
Hydra Emerges from the Shadows - NASA
WEBJul 15, 2015 · Since its discovery in 2005, Pluto’s moon Hydra has been known only as a fuzzy dot of uncertain shape, size, and reflectivity. Imaging obtained during New Horizons’ historic transit of the Pluto-Charon system and transmitted to Earth early this morning has definitively resolved these fundamental properties of Pluto’s outermost moon.
Pluto's Moon Hydra - Universe Today
WEBJul 13, 2015 · Hydra orbits Pluto at a distance of about 65,000 km with a very low eccentricity (0.0059) and an orbital inclination of about 0.24°. It orbits in the same plane as Charon and Nix and has an ...
NASA – Pluto and Its Moons: Charon, Nix and Hydra - Science@NASA
WEBApr 17, 2023 · A pair of small moons that NASA's Hubble Space Telescope discovered orbiting Pluto now have official names: Nix and Hydra. Photographed by Hubble in 2005, Nix and Hydra are roughly 5,000 times fainter than Pluto and are about two to three times farther from Pluto than its large moon, Charon, which was discovered in 1978.
New Horizons Makes its First Detection of Pluto’s Moon Hydra
WEBSep 12, 2014 · Hydra, which has moved over the two days, is revealed as an overlapping pair of bright and dark spots just above Pluto. The bottom row shows the same images with Hydra’s expected position on the two dates, identified in …
Hydra viewed by New Horizons - The Planetary Society
WEBJul 14, 2015 · Since its discovery in 2005, Pluto's moon Hydra has been known only as a fuzzy dot of uncertain shape, size, and reflectivity. Imaging during New Horizons' historic transit of the Pluto-Charon system definitively resolved these fundamental properties of Pluto's outermost moon.
Hydra Emerges from the Shadows - NASA Jet Propulsion …
WEBJul 15, 2015 · Since its discovery in 2005, Pluto's moon Hydra has been known only as a fuzzy dot of uncertain shape, size, and reflectivity. Imaging obtained during NASA's New Horizons' historic transit of the Pluto-Charon system and transmitted to Earth early this morning has definitively resolved these fundamental properties of Pluto's outermost moon.