Neptune Odyssey is an orbiter mission concept to study Neptune and its moons, particularly Triton. The orbiter would enter into a retrograde orbit of Neptune...

discussions to launch Neptune missions sooner. In 2003, there was a proposal in NASA's "Vision Missions Studies" for a "Neptune Orbiter with Probes" mission...

The Uranus Orbiter and Probe is an orbiter mission concept to study Uranus and its moons. The orbiter would also deploy an atmospheric probe to characterize...

hosts a thin but well-structured atmosphere. Triton orbits Neptune in a retrograde orbit—an orbit in the direction opposite to its planet's rotation—the...

visit Neptune. After the Voyager flyby, NASA's next step in scientific exploration of the Neptune system was considered to be a flagship orbiter mission...

Neptune's rotation and inclined relative to Neptune's equator, which suggests that it did not form in orbit around Neptune but was instead gravitationally captured...

discovery of the planet Neptune in 1846, there was considerable speculation that another planet might exist beyond its orbit. The search began in the...

ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest...

and Jupiter's orbit) and the Kuiper belt (just outside Neptune's orbit). Six planets, six dwarf planets, and other bodies have orbiting natural satellites...

perihelion and Neptune's orbit, Neptune is consistently distant (averaging a quarter of its orbit away). Other (much more numerous) Neptune-crossing bodies...

A hot Neptune or Hoptune is a type of giant planet with a mass similar to that of Uranus or Neptune orbiting close to its star, normally within less than...

Laomedeia S/2002 N 5 History of Neptune Discovery of Neptune Exploration of Neptune Voyager 2 Interstellar Express Neptune Orbiter ODINUS Trident Outline of...

a circumstellar disc in the outer Solar System, extending from the orbit of Neptune at 30 astronomical units (AU) to approximately 50 AU from the Sun....

The planet Neptune was mathematically predicted before it was directly observed. With a prediction by Urbain Le Verrier, telescopic observations confirming...

the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging...

trans-Neptunian objects that orbit in 2:3 mean-motion resonance with Neptune. This means that for every two orbits a plutino makes, Neptune orbits three times. The...

Neptune trojans are bodies that orbit the Sun near one of the stable Lagrangian points of Neptune, similar to the trojans of other planets. They therefore...

Atmosphere Orbiter Mars Science Laboratory Giant planets: Jupiter Polar Orbiter with Probes (JPOP) Large satellites: Io Observer Ganymede Orbiter Neptune flyby...

belt object (KBO) that orbits beyond Neptune and is not controlled by an orbital resonance with Neptune. Cubewanos have orbits with semi-major axes in...

Greek mythology. Proteus orbits Neptune in a nearly equatorial orbit at a distance of about 4.75 times the radius of Neptune's equator. Despite being a...

Nereid, or Neptune II, is the third-largest moon of Neptune. It has the most eccentric orbit of all known moons in the Solar System. It was the second...

(minor-planet designation: 136108 Haumea) is a dwarf planet located beyond Neptune's orbit. It was discovered in 2004 by a team headed by Mike Brown of Caltech...

Lassell, Arago, and Adams. Neptune also has a faint unnamed ring coincident with the orbit of the moon Galatea. Three other moons orbit between the rings: Naiad...

Venus, Earth, and Mars, and the giant planets Jupiter, Saturn, Uranus, and Neptune. The word planet probably comes from the Greek planḗtai, meaning "wanderers"...

Telescope at Mauna Kea, Hawaii, and later announced on 23 February 2024. It orbits Neptune in the retrograde direction at an average distance of over 50 million km...

Neso /ˈniːsoʊ/, also known as Neptune XIII, is the second-outermost known natural satellite of Neptune, after S/2021 N 1. It is a retrograde irregular...

Dan (August 25, 2015). "NASA To Study Uranus, Neptune Orbiters". Space News. Stephen Clark "Uranus, Neptune in NASA's sights for new robotic mission", Spaceflight...

Saturn. Uranus orbit (Uranocentric orbit, named after Uranus): An orbit around the planet Uranus. Neptune orbit (Poseidocentric orbit, named after Poseidon):...

201912552 b, is an exoplanet orbiting the red dwarf K2-18, located 124 light-years (38 pc) away from Earth. The planet is a mini-neptune about 2.6 times the radius...

as a dwarf planet. This includes Pluto, whose orbit intersects with Neptune's orbit and shares its orbital neighbourhood with many Kuiper belt objects....