Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.102552E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T01:25:39+0800
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    1 Object 1

    AOE ID 37181
    NORAD ID 37181
    Object Type ROCKET BODY
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 66584
    NORAD ID 66584
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4B R/B STARLINK-35939
    Time of Closest Approach 2026-09-05T12:19:11+0000
    Collision Probability (Pc) 2.102552E-6
    Conjunction Distance (km) 2.185 km
    Relative Speed (km/s) 12.714 km/s
    Conjunction Risk Parameters R (Radial): 0.389 | I (In-track): 1.189 | C (Cross-track): 1.792
    Collision Risk Index (CRI) 0.41
    X Position (km) -2787.425 -2789.42
    Position Y (km) 4308.678 4308.913
    Position Z (km) 4545.035 4544.175
    Velocity X (km/s) -1.533 -5.669
    Velocity Y (km/s) 4.912 -4.956
    Velocity Z (km/s) -5.649 1.217

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4B R/B STARLINK-35939
    Semimajor Axis (a) 6886.947 km 6861.160 km
    Eccentricity (e) 0.007123 0.000158
    Inclination (i) 97.7767° 43.0036°
    RAAN 294.6340° 60.4443°
    Perigee Argument 197.0214° 267.8464°
    Mean Anomaly (M) 162.8630° 92.2207°
    Apogee 557.868 km 484.107 km
    Perigee 459.752 km 481.939 km
    Orbit Epoch 2026-09-04T05:40:21+0000 2026-09-03T20:45:21+0000

    CZ-4B R/B & STARLINK-35939 Collision Probability (Pc) Trend

    CZ-4B R/B & STARLINK-35939 Collision Probability (Pc) TrendNot Available

    CZ-4B R/B & STARLINK-35939 Miss Distance (Miss Distance) Trend

    CZ-4B R/B & STARLINK-35939 Miss Distance (Miss Distance) TrendNot Available

    CZ-4B R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35939Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4B R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35939Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4B R/B

    No nearby objects data