They show that the planetoid Sedna does not seem to have a moon as they expected.
From the newscientist.com
The planetoid, whose longest axis measures around 126 kilometres, is oval in shape.
From the sciencedaily.com
House is a malevolent, sentient planetoid, located in a tiny bubble universe.
From the en.wikipedia.org
The planetoid is nearly the size of Pluto and about three times as far away.
From the newscientist.com
The Zetarans wiped out everyone on the library planetoid, Memory Alpha.
From the en.wikipedia.org
The planetoid, about three-quarters the size of Pluto, was discovered in November 2003.
From the newscientist.com
The planetoid Sedna appears not to have a moon, which would have accounted for its slow rotation.
From the newscientist.com
This is not big enough to be called a planet, Brown says, preferring to use the term planetoid.
From the newscientist.com
Triton is a real planetoid, the largest moon of Neptune.
From the en.wikipedia.org
More examples
Minor planet: any of numerous small celestial bodies that move around the sun
A minor planet is an astronomical object in direct orbit around the Sun that is neither a dominant planet nor a comet. The first minor planet discovered was Ceres in 1801. Since then, more than 200,000 minor planets have been discovered, most of them lying in the asteroid belt.
Planetoid is a series of strategy video games. It consists of 3 games: The Planetoid, Planetoid 2, and Planetoid 3. Planetoid 3 is currently under active development.
A minor planet is an astronomical object in direct orbit around the Sun that is neither a planet nor exclusively classified as a comet. Minor planets can be dwarf planets, asteroids, trojans, centaurs, Kuiper belt objects, and other trans-Neptunian objects. As of 2016, the orbits of 709,706 minor planets were archived at the Minor Planet Center...
Any of several small rocky bodies in orbit about the Sun; the larger asteroids
Another name for an asteroid or minor planet.
Small planets, such as Chiron, are considered planetoids. More and more are being discovered with the new telescopes we have today.
A planet, moon or large asteroid, capable of holding a gaseous atmosphere by gravity.