Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.401416E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T11:06:21+0800
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    1 Object 1

    AOE ID 20894
    NORAD ID 20894
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 24907
    NORAD ID 24907
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4 DEB IRIDIUM 22
    Time of Closest Approach 2026-09-11T20:10:20+0000
    Collision Probability (Pc) 1.401416E-6
    Conjunction Distance (km) 1.968 km
    Relative Speed (km/s) 4.348 km/s
    Conjunction Risk Parameters R (Radial): -1.842 | I (In-track): 0.661 | C (Cross-track): -0.205
    Collision Risk Index (CRI) 0.38
    X Position (km) -250.936 -251.029
    Position Y (km) 2606.993 2607.021
    Position Z (km) 6641.352 6643.318
    Velocity X (km/s) 2.409 -1.933
    Velocity Y (km/s) 6.623 6.694
    Velocity Z (km/s) -2.49 -2.694

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB IRIDIUM 22
    Semimajor Axis (a) 7152.932 km 7148.918 km
    Eccentricity (e) 0.001962 0.000219
    Inclination (i) 98.5566° 86.3916°
    RAAN 251.1790° 285.2461°
    Perigee Argument 55.7949° 88.1777°
    Mean Anomaly (M) 5.6139° 271.9670°
    Apogee 788.832 km 772.346 km
    Perigee 760.758 km 769.216 km
    Orbit Epoch 2026-09-09T22:46:06+0000 2026-09-10T13:33:37+0000

    CZ-4 DEB & IRIDIUM 22 Collision Probability (Pc) Trend

    CZ-4 DEB & IRIDIUM 22 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & IRIDIUM 22 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & IRIDIUM 22 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 22Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 22Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data