Hidalgo (English spelling)

Japanese: ヒダルゴ(英語表記)Hidalgo
Hidalgo (English spelling)
An asteroid. Discovered by W. Baade in 1920. Registration number 944 given to asteroids with a confirmed orbit. Its orbit is an ellipse with an eccentricity of 0.657, with the perihelion near the orbit of Mars and the aphelion near the orbit of Saturn. It is the largest of all asteroids, and therefore its orbital period is 13.95 years, the longest of all asteroids. It sometimes comes very close to Jupiter, and the orbital inclination of 42.5°, the largest of all asteroids, may be the result of this. Its average apparent magnitude at opposition is 18.0, and its brightness suggests that its diameter is about 24 to 48 km.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
小惑星の一つ。 1920年に W.バーデが発見。軌道の確定した小惑星に与えられる登録番号 944。その軌道は離心率 0.657の楕円で,近日点は火星軌道近くに,遠日点は土星軌道付近にあり,小惑星中最大,したがって公転周期は 13.95年と小惑星中最長である。木星に非常に接近する場合があり,小惑星中最大の軌道傾斜角 42.5°はその影響である可能性がある。衝のときの平均実視等級は 18.0等,その明るさから直径は約 24~48kmと推定される。

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