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Neptune Menu  

Hippocamp, a moon of Neptune

Larissa
Hippocamp
Proteus

Classification
Natural satellite of Neptune
Average distance from Neptune
105,300 km
65,430 miles
Diameter across equator
34 km
21 miles
Time to orbit Neptune
23 hours
Year of Discovery
2013
Origin of Name
A hippocamp is a half-horse, half-fish sea monster. Got its name because its discoverer likes seahorses!

Hippocamp is a moon of Neptune. It is one of Neptune's inner moons and is the sixth moon from the planet. Hippocamp has a diameter of approximately 34 kilometres (20 miles) and is the smallest moon of Neptune. It orbits Neptune at a distance of about 105,000 kilometres (65,000 miles). A length of an orbit takes 23 hours.

Hippocamp orbits closely to Proteus, a much larger moon of Neptune, and it is possible that it was originally a part of Proteus that broke off when something crashed into Proteus.

Hippocamp is classed as a regular prograde moon. Regular moons are moons that formed out of materials spinning around a planet. Irregular moons are ones that were captured by a planet. A prograde moon is one which orbits in the same direction of the rotation of its host planet.


Why is HIppocamp called Hippocamp?

In Greek mythology, a hippocamp or hippocampus is horse with a fish's tail. It's kind of a seahorse, but a big one. Not one of those little ones you see in aquariums! The name was suggested by the discover of the moon, Mark Showalter, a keen scuba diver who likes seahorses.

Human beings have a hippocampus in their brain. This doesn't mean they have a seahorse or even a moon in their heads! The hippocampus is the part of the brain that helps people to learn and remember things and recall those memories. It gets its name because it looks a little like a seahorse. There are actually two of them in a human brain. Fascinating, eh? Nothing at all to do with space though!

Before it received its official name, Hippocamp was identified as S/2004 N1 or Neptune XIV.


Larissa
Hippocamp
Proteus
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