类型: | 主带小行星 | |
轨道历元: | 2018-3-23 (TT) | JD = 2458200.5 (TT) |
轨道更新时间: | 2018-07-12 | |
半长径(a): | 2.2011054 AU | 329280681.00646 km |
偏心率(e): | 0.15695095 | |
轨道倾角(i): | 5.88681° | 0.10274421693933 rad |
升交点经度(Ω): | 110.90002° | 1.9355704895276 rad |
近点角距(ω): | 285.27636° | 4.9790117601047 rad |
平近点角(M): | 74.1536583° | 1.2942254897338 rad |
近日距(rp): | 1.8556398164199 AU | 277599765.30585 km |
远日距(ra): | 2.5465709835801 AU | 380961596.70707 km |
半通径: | 2.1468842484648 AU | 321169312.19038 km |
平运动角速度: | 0.3018163863927 °/day | 6.096863054426E-8 rad/s |
平均轨道速度: | 0.011594740198024 AU/day | 20.075792185645 km/s |
轨道周期: | 3.265648678482 yr | 103056034.73606 s |
ω+M: | 359.4300183° | 6.2732372498385 rad |
Ω+ω+M: | 110.3300383° | 1.9256224321864 rad |
e*cos(ω): | 0.04135266020596 | |
e*sin(ω): | -0.15140527797865 | |
e*cos(ω+Ω): | 0.12669139051624 | |
e*sin(ω+Ω): | 0.092643900365665 | |
sin(i/2)*cos(Ω): | -0.018318340165033 | |
sin(i/2)*sin(Ω): | 0.047970940725643 | |
tan(i/2)*cos(Ω): | -0.01834253868005 | |
tan(i/2)*sin(Ω): | 0.048034310306023 | |
近日点时刻: | 2017-7-20.3 2020-10-25.1 2024-1-30.9 2027-5-7.6 |
JD = 2457954.8 JD = 2459147.6 JD = 2460340.4 JD = 2461533.1 |
远日点时刻: | 2015-12-1.9 2019-3-8.7 2022-6-13.5 2025-9-18.3 |
JD = 2457358.4 JD = 2458551.2 JD = 2459744 JD = 2460936.8 |
物理参数
光谱型(spec_B): | ||
绝对星等: | 6.49 | |
直径: | 172.774 km (估) | |
体积: | 2.70044e+15 m3 | 2.70044e+6 km3 |
质量: | 5.40087e+18 kg | |
GM: | 0.360346 km3/s2 | 3.60346e+8 m3/s2 |
表面重力加速度: | 0.0482862 m/s2 | 0.00492382 ge |
环绕速度: | 64.5856 m/s | |
逃逸速度: | 91.3378 m/s | |
转动惯量: | 1.61221e+28 kg·m2 |
- 注1:标识为(估)的直径是从绝对星等转换来的;
- 注2:这里的质量、体积、转动惯量、表面重力加速度、环绕速度、逃逸速度的计算均假设小行星为球体,且密度假设为2 g/cm^3;
- 注3:这里小行星的近日点时刻和远日点时刻均为二体意义下(只考虑太阳引力)的计算结果;
- 注4:以上结果仅供参考,特别是量级上的参考,更精确的数据需要查阅相关文献。
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