类型: | 木星特洛伊小行星 (L5) | |
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): | 5.2167254 AU | 780411011.81966 km |
偏心率(e): | 0.1381766 | |
轨道倾角(i): | 22.04748° | 0.3848011177676 rad |
升交点经度(Ω): | 44.3539° | 0.77412159110031 rad |
近点角距(ω): | 308.15414° | 5.3783043466516 rad |
平近点角(M): | 170.3914662° | 2.9738921024906 rad |
近日距(rp): | 4.4958960210944 AU | 672576471.60386 km |
远日距(ra): | 5.9375547789056 AU | 888245552.03546 km |
半通径: | 5.1171236472427 AU | 765510801.69007 km |
平运动角速度: | 0.082719349174597 °/day | 1.6709780071801E-8 rad/s |
平均轨道速度: | 0.0075315168687435 AU/day | 13.040496373118 km/s |
轨道周期: | 11.91530510337 yr | 376018432.33012 s |
ω+M: | 118.5456062° | 2.0690111419626 rad |
Ω+ω+M: | 162.8995062° | 2.8431327330629 rad |
e*cos(ω): | 0.085362628189653 | |
e*sin(ω): | -0.10865539331352 | |
e*cos(ω+Ω): | 0.13699700952855 | |
e*sin(ω+Ω): | -0.018016441596348 | |
sin(i/2)*cos(Ω): | 0.13672599900284 | |
sin(i/2)*sin(Ω): | 0.13367665467556 | |
tan(i/2)*cos(Ω): | 0.13929628866557 | |
tan(i/2)*sin(Ω): | 0.13618962021369 | |
近日点时刻: | 2000-9-1.1 2012-8-1.1 2024-7-1.2 2036-5-31.3 |
JD = 2451788.6 JD = 2456140.6 JD = 2460492.7 JD = 2464844.8 |
远日点时刻: | 2006-8-17.1 2018-7-17.2 2030-6-16.2 2042-5-16.3 |
JD = 2453964.6 JD = 2458316.7 JD = 2462668.7 JD = 2467020.8 |
物理参数
光谱型(spec_B): | ||
绝对星等: | 8.19 | |
直径: | 78.9731 km (估) | |
体积: | 2.57891e+14 m3 | 257891 km3 |
质量: | 5.15782e+17 kg | |
GM: | 0.034413 km3/s2 | 3.4413e+7 m3/s2 |
表面重力加速度: | 0.0220711 m/s2 | 0.00225063 ge |
环绕速度: | 29.5214 m/s | |
逃逸速度: | 41.7495 m/s | |
转动惯量: | 3.2168e+26 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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