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): | 2.7727661 AU | 414799904.48419 km |
偏心率(e): | 0.2305055 | |
轨道倾角(i): | 34.83688° | 0.60801825712216 rad |
升交点经度(Ω): | 173.0838° | 3.0208821918634 rad |
近点角距(ω): | 310.00634° | 5.410631335057 rad |
平近点角(M): | 334.3231879° | 5.8350403946187 rad |
近日距(rp): | 2.1336282637364 AU | 319186245.10111 km |
远日距(ra): | 3.4119039362635 AU | 510413563.86727 km |
半通径: | 2.6254413134832 AU | 392760430.12126 km |
平运动角速度: | 0.21346870742421 °/day | 4.3121895770011E-8 rad/s |
平均轨道速度: | 0.010330582817562 AU/day | 17.886958246578 km/s |
轨道周期: | 4.6171932891732 yr | 145707538.94241 s |
ω+M: | 284.3295279° | 4.9624864224961 rad |
Ω+ω+M: | 97.4133279° | 1.7001833071799 rad |
e*cos(ω): | 0.14818561743729 | |
e*sin(ω): | -0.1765610611516 | |
e*cos(ω+Ω): | -0.12584627344667 | |
e*sin(ω+Ω): | 0.19312043131123 | |
sin(i/2)*cos(Ω): | -0.29716963374987 | |
sin(i/2)*sin(Ω): | 0.036046733179603 | |
tan(i/2)*cos(Ω): | -0.31145154450196 | |
tan(i/2)*sin(Ω): | 0.037779131674292 | |
近日点时刻: | 2013-12-7.9 2018-7-21.3 2023-3-3.7 2027-10-15.1 |
JD = 2456634.4 JD = 2458320.8 JD = 2460007.2 JD = 2461693.6 |
远日点时刻: | 2016-3-30.1 2020-11-10.5 2025-6-23.9 2030-2-4.4 |
JD = 2457477.6 JD = 2459164 JD = 2460850.4 JD = 2462536.9 |
物理参数
光谱型(spec_B): | B | |
绝对星等: | 4.13 | |
直径: | 512.247 km (估) | |
体积: | 7.0378e+16 m3 | 7.0378e+7 km3 |
质量: | 1.40756e+20 kg | |
GM: | 9.39124 km3/s2 | 9.39124e+9 m3/s2 |
表面重力加速度: | 0.143161 m/s2 | 0.0145983 ge |
环绕速度: | 191.486 m/s | |
逃逸速度: | 270.802 m/s | |
转动惯量: | 3.69339e+30 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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