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): | 2.5734866 AU | 384988115.61182 km |
偏心率(e): | 0.19135853 | |
轨道倾角(i): | 5.36775° | 0.093684910923926 rad |
升交点经度(Ω): | 141.58365° | 2.4711008594913 rad |
近点角距(ω): | 358.74621° | 6.261302543551 rad |
平近点角(M): | 186.8309235° | 3.2608147596166 rad |
近日距(rp): | 2.0810279872493 AU | 311317355.74087 km |
远日距(ra): | 3.0659452127507 AU | 458658875.48277 km |
半通径: | 2.4792504437782 AU | 370890587.29893 km |
平运动角速度: | 0.23873781077392 °/day | 4.8226398692224E-8 rad/s |
平均轨道速度: | 0.01072310320518 AU/day | 18.566590355264 km/s |
轨道周期: | 4.1284884039626 yr | 130285185.65689 s |
ω+M: | 185.5771335° | 3.2389319959881 rad |
Ω+ω+M: | 327.1607835° | 5.7100328554793 rad |
e*cos(ω): | 0.1913127153009 | |
e*sin(ω): | -0.0041871192908912 | |
e*cos(ω+Ω): | -0.14729485056639 | |
e*sin(ω+Ω): | 0.12215692366946 | |
sin(i/2)*cos(Ω): | -0.036688400998539 | |
sin(i/2)*sin(Ω): | 0.029095918520905 | |
tan(i/2)*cos(Ω): | -0.036728688962787 | |
tan(i/2)*sin(Ω): | 0.029127869090929 | |
近日点时刻: | 2016-1-30.4 2020-3-17.4 2024-5-3.3 2028-6-19.2 |
JD = 2457417.9 JD = 2458925.9 JD = 2460433.8 JD = 2461941.7 |
远日点时刻: | 2014-1-6.5 2018-2-22.4 2022-4-10.3 2026-5-27.2 |
JD = 2456664 JD = 2458171.9 JD = 2459679.8 JD = 2461187.7 |
物理参数
光谱型(spec_B): | S | |
绝对星等: | 6.85 | |
直径: | 146.379 km (估) | |
体积: | 1.64223e+15 m3 | 1.64223e+6 km3 |
质量: | 3.28447e+18 kg | |
GM: | 0.21914 km3/s2 | 2.1914e+8 m3/s2 |
表面重力加速度: | 0.0409094 m/s2 | 0.0041716 ge |
环绕速度: | 54.7187 m/s | |
逃逸速度: | 77.384 m/s | |
转动惯量: | 7.03757e+27 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。
热门小天体
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· (4) Vesta
a = 2.3621 AU, e = 0.08907, i = 7.1407° -
· (2) Pallas
a = 2.77277 AU, e = 0.23051, i = 34.83688° -
· C/1826 P1 (Pons)
a = 340.063 AU, e = 0.99749, i = 25.9496° -
· C/1816 B1 (Pons)
a = 0 AU, e = 1, i = 43.111° -
· (7) Iris
a = 2.38562 AU, e = 0.2314, i = 5.52349° -
· (99942) Apophis
a = 0.92244 AU, e = 0.1912, i = 3.33137°