Sednoids

Sednoids refers to a group of trans-Neptunian objects (TNOs) that have orbits significantly influenced by the gravitational pull of a distant, yet-to-be-identified planet, often referred to as "Planet Nine" or "Planet X." The name is derived from the first known member of this group, Sedna, which was discovered in 2003 and has a highly elliptical orbit that takes it far beyond the typical Kuiper Belt.

2021 RR205 is an asteroid that was discovered in 2021. It is classified as a near-Earth object (NEO), specifically an Apollo-type asteroid, which means its orbit crosses that of Earth's. Asteroids like 2021 RR205 can vary in size and composition, and their trajectories are closely monitored by astronomers to assess any potential risk of impact with Earth.

541132 Leleākūhonua is a trans-Neptunian object (TNO) located in the Kuiper Belt, a region of the solar system beyond the orbit of Neptune that is populated with many small bodies. It was discovered on 30 November 2010 and is classified as a centaur due to its dynamic orbit that crosses the orbits of the giant planets.

90377 Sedna is a distinct and distant object in the solar system, classified as a trans-Neptunian object (TNO). It was discovered in 2003 and is notable for its unusually large size and highly eccentric orbit, which takes it far beyond the orbit of Neptune. Sedna is believed to be one of the largest known TNOs, with an estimated diameter of about 1,000 kilometers (620 miles).

Sednoid generally refers to a group of trans-Neptunian objects located in the outer region of the solar system, specifically in the distant area beyond Neptune. The term is primarily associated with a particular object known as 90377 Sedna, which was discovered in 2003. Sedna is notable for its highly elongated elliptical orbit, taking it far beyond the traditional boundaries of the solar system.