What is Halimede?
Q: What is Halimede?
A: Halimede is a non-spherical moon of Neptune.
Q: When was Halimede discovered?
A: Halimede was found on August 14, 2002, by Matthew J. Holman et al.
Q: What is the diameter of Halimede?
A: Halimede is about 62 kilometres in diameter (assuming an albedo of 0.04).
Q: What is the orbit of Halimede like?
A: Halimede follows a very inclined and very eccentric orbit seen on the image in relation to other non-spherical moons of Neptune.
Q: What is Halimede's color?
A: Halimede appears neutral (grey) in visible light.
Q: Why is Halimede suggested to be a piece of Nereid?
A: Given the very similar colour of the moon to that of Nereid together with a high probability (41%) of their collision in the lifespan of the Solar system, it has been suggested that the moon could be a piece of Nereid.
Q: What is Halimede's name based on?
A: Halimede, or Neptune IX, like many of the farther moons of Neptune, is named after one of the Nereids, the fifty daughters of Nereus and Doris.
