Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    5.75229E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T16:55:54+0800
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    1 Object 1

    AOE ID 58703
    NORAD ID 58703
    Object Type PAYLOAD
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 59502
    NORAD ID 59502
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter TIANMU-1 18 STARLINK-31357
    Time of Closest Approach 2026-09-06T04:14:45+0000
    Collision Probability (Pc) 5.75229E-6
    Conjunction Distance (km) 1.381 km
    Relative Speed (km/s) 7.913 km/s
    Conjunction Risk Parameters R (Radial): -0.215 | I (In-track): 1.168 | C (Cross-track): 0.706
    Collision Risk Index (CRI) 0.5
    X Position (km) 1935.232 1935.97
    Position Y (km) 5871.94 5872.473
    Position Z (km) 2966.393 2965.355
    Velocity X (km/s) 0.018 -6.481
    Velocity Y (km/s) -3.456 0.1
    Velocity Z (km/s) 6.8 4.021

    Orbital Parameters 国际轨道数据源

    Parameter TIANMU-1 18 STARLINK-31357
    Semimajor Axis (a) 6861.848 km 6861.253 km
    Eccentricity (e) 0.000638 0.000123
    Inclination (i) 97.4674° 43.0021°
    RAAN 73.3954° 54.1230°
    Perigee Argument 66.6068° 254.8502°
    Mean Anomaly (M) 293.5841° 105.2214°
    Apogee 488.091 km 483.964 km
    Perigee 479.331 km 482.268 km
    Orbit Epoch 2026-09-04T04:57:47+0000 2026-09-03T19:34:50+0000

    TIANMU-1 18 & STARLINK-31357 Collision Probability (Pc) Trend

    TIANMU-1 18 & STARLINK-31357 Collision Probability (Pc) TrendNot Available

    TIANMU-1 18 & STARLINK-31357 Miss Distance (Miss Distance) Trend

    TIANMU-1 18 & STARLINK-31357 Miss Distance (Miss Distance) TrendNot Available

    TIANMU-1 18Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31357Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TIANMU-1 18Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31357Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TIANMU-1 18

    No nearby objects data