Astronomers have given a name — “Hippocamp” — to the most recently discovered moon of Neptune, which also formerly went by S/2004 N1. They’ve figured out how big the satellite is as well, and teased out some interesting details about its past, a new study reports.
What is Neptune smallest moon?
Neptune has an unusual moon system: it has one huge satellite, Triton. Then there are seven tiny moons that sit within Triton’s orbit and six more further out. Hippocamp, spotted in 2013 but not officially named until now, is the smallest and youngest of the inner moons.
What is the smallest moon?
|Dimensions||480 × 468.4 × 465.8 km|
|Mean radius||235.8±0.7 km (0.03697 Earths)|
What are Neptune’s 14 moons called?
Each of the moons is named for a mythological Greek water deity. Moving from closest to Neptune to furthest out, their names are Naiad, Thalassa, Despina, Galatea, Larissa, S/2004 N1 (which has yet to receive an official name), Proteus, Triton, Nereid, Halimede, Sao, Laomedeia, Psamathe, and Neso.
What are Neptune’s 3 biggest moons?
Neptune has a total of 14 known moons. The largest moon is Triton which was discovered by William Lassell just seventeen days after Neptune was found. One hundred years later the second moon, Nereid was found.
List of moons.
|Diameter (km)||66 (96 × 60 × 52)|
What planet has the largest moon?
Ganymede. Ganymede is the largest moon in the solar system (larger than the planet Mercury), and is the only moon known to have its own internally generated magnetic field.
What are the 5 largest moons of Neptune?
Neptune has 13 moons, Triton, Nereid, Naiad, Thalassa, Despina, Larissa, Proteus, and Galatea, plus five smaller, unnamed moons. Triton and Proteus orbit close to Neptune; Nereid is in a distant orbit.
What is the smallest planet in the universe?
The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth’s Moon.
What is Neptune’s biggest moon?
Triton is the largest of Neptune’s 13 moons. It is unusual because it is the only large moon in our solar system that orbits in the opposite direction of its planet’s rotation―a retrograde orbit.
Does Jupiter have 79 moons?
There are 79 known moons of Jupiter, not counting a number of moonlets likely shed from the inner moons.
What planet has 27 moons?
|Planet / Dwarf Planet||Confirmed Moons||Provisional Moons|
Can you see Neptune’s moons?
Due to Neptune’s distance from Earth, only two moons were confirmed with ground telescopes before Voyager 2. The first one, Triton, was actually discovered only 17 days after the planet itself was found. … Nereid is the other confirmed telescopic discovery, but it is much smaller: 105 miles (170 kilometers).
What is Neptune’s second largest moon?
Naiad, the closest regular moon, is also the second smallest among the inner moons (following the discovery of Hippocamp), whereas Proteus is the largest regular moon and the second largest moon of Neptune.
What are the 4 largest moons of Neptune?
- Proteus was discovered in 1989 by the Voyager 2 spacecraft. …
- Psamathe was discovered by Scott S. …
- Sao was discovered Aug. …
- Thalassa was discovered in August 1989 in images taken by Voyager 2. …
- Triton is the only known satellite in our solar system to have a surface made mainly of nitrogen ice.
Is Triton getting closer to Neptune?
Triton, the largest satellite of Neptune, orbits in the opposite direction from most moons, suggesting that Neptune captured it in the distant past. Millions of years from now, Triton will move so close to Neptune that tidal forces will rip Triton apart, forming bright new rings around the giant planet.
How many moons does Neptune 2020?
Uranus and Neptune
Lastly, Neptune has 14 named moons. One of Neptune’s moons, Triton, is as big as dwarf planet Pluto. To learn more about the moons in our solar system, visit the NASA Solar System Exploration moons page.