English Dictionary

planetoid

名詞

(astronomy) An asteroid of any size / (astronomy) An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object

日本語の意味

（天文学）大小を問わず、一般的な意味での小惑星として扱われる天体 / （天文学）小惑星に類似した天体で、特に外惑星帯内（例：ケンタウルス類、クーパー・ベルト天体）の軌道にある天体

The spacecraft's instruments detected a nearby planetoid with a chaotic orbit, prompting mission scientists to adjust their trajectory.

探査機の観測装置は軌道が乱れた近傍の小惑星を検出し、ミッションの科学者たちは軌道を修正することにした。

意味（1）

(astronomy) An asteroid of any size

The group of small bodies that circle round the Sun, outside the orbit of Mars, are known under the designation of the planetoids.

意味（2）

(astronomy) An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object

意味（3）

(astronomy) A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna

1991 Optimal trajectories for an ion driven spacecraft from earth to the planetoid Vesta

意味（4）

(astronomy) A dwarf planet

We prefer the word planetoid as a new word to describe round objects orbiting the sun.

planetoids （ plural ）