Bennu
101955 Bennu (provisional designation 1999 RQ36) is a carbonaceous asteroid in the Apollo group, discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous object that is listed on the Sentry Risk Table and has the second highest cumulative rating on the Palermo scale. It has a cumulative chance of around 1 in 1,750 of impacting Earth between 2178 and 2290 with the greatest risk being on 24 September 2182. It is named after Bennu, the ancient Egyptian mythological bird associated with the Sun, creation, and rebirth.
Apollo
危険
発見日: 1999-09-11
観測回数: 554
101955 Bennu (provisional designation 1999 RQ36) is a carbonaceous asteroid in the Apollo group, discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous object that is listed on the Sentry Risk Table and has the second highest cumulative rating on the Palermo scale. It has a cumulative chance of around 1 in 1,750 of impacting Earth between 2178 and 2290 with the greatest risk being on 24 September 2182. It is named after Bennu, the ancient Egyptian mythological bird associated with the Sun, creation, and rebirth.
軌道パラメータ
半長軸
1.126 AU
離心率
0.2037
近日点
0.897 AU
遠日点
1.355366 AU
軌道傾斜角
6.03°
公転周期
1.1964 yr
暦元
2455562.5
平均近点角
101.7°
Orbit diagram
The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.
物理パラメータ
直径
0.48444 km
アルベド
0.044
密度
1.194 g/cm³
自転周期
4.296061 h
絶対等級
20.21
軌道品質
RMS
0.29146
状態コード
0
軌道ID
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