Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.860395E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T10:41:51+0800
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    1 Object 1

    AOE ID 20876
    NORAD ID 20876
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 25481
    NORAD ID 25481
    Object Type PAYLOAD
    Country
    ORB ORB

    Conjunction Constraints

    Parameter CZ-4 DEB ORBCOMM FM 27
    Time of Closest Approach 2026-09-11T16:58:49+0000
    Collision Probability (Pc) 4.860395E-6
    Conjunction Distance (km) 1.43 km
    Relative Speed (km/s) 7.311 km/s
    Conjunction Risk Parameters R (Radial): 1.059 | I (In-track): -0.84 | C (Cross-track): -0.466
    Collision Risk Index (CRI) 0.49
    X Position (km) 1021.305 1021.729
    Position Y (km) 6560.829 6561.425
    Position Z (km) 2614.72 2615.949
    Velocity X (km/s) 1.584 -5.338
    Velocity Y (km/s) 2.49 2.638
    Velocity Z (km/s) -6.868 -4.521

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB ORBCOMM FM 27
    Semimajor Axis (a) 7134.911 km 7139.055 km
    Eccentricity (e) 0.001270 0.000289
    Inclination (i) 98.4639° 45.0055°
    RAAN 256.6841° 298.0212°
    Perigee Argument 260.6575° 263.3002°
    Mean Anomaly (M) 220.2410° 96.7519°
    Apogee 765.833 km 762.980 km
    Perigee 747.715 km 758.856 km
    Orbit Epoch 2026-09-10T14:08:06+0000 2026-09-08T19:59:27+0000

    CZ-4 DEB & ORBCOMM FM 27 Collision Probability (Pc) Trend

    CZ-4 DEB & ORBCOMM FM 27 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & ORBCOMM FM 27 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & ORBCOMM FM 27 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    ORBCOMM FM 27Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    ORBCOMM FM 27Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data