Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.443701E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T06:38:17+0800
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    1 Object 1

    AOE ID 35573
    NORAD ID 35573
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 63929
    NORAD ID 63929
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4B DEB STARLINK-33989
    Time of Closest Approach 2026-09-07T09:50:59+0000
    Collision Probability (Pc) 3.443701E-6
    Conjunction Distance (km) 1.877 km
    Relative Speed (km/s) 15.189 km/s
    Conjunction Risk Parameters R (Radial): -1.606 | I (In-track): 0.108 | C (Cross-track): -0.964
    Collision Risk Index (CRI) 0.46
    X Position (km) 6591.865 6590.359
    Position Y (km) 158.187 159.091
    Position Z (km) -1815.235 -1814.575
    Velocity X (km/s) 2.004 -1.957
    Velocity Y (km/s) -1.027 2.661
    Velocity Z (km/s) 7.307 -6.885

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4B DEB STARLINK-33989
    Semimajor Axis (a) 6855.071 km 6873.943 km
    Eccentricity (e) 0.004493 0.000348
    Inclination (i) 97.7921° 70.0015°
    RAAN 356.2009° 182.6554°
    Perigee Argument 43.3574° 265.5205°
    Mean Anomaly (M) 317.1185° 46.5849°
    Apogee 507.732 km 498.201 km
    Perigee 446.136 km 493.411 km
    Orbit Epoch 2026-09-04T12:50:26+0000 2026-09-04T18:00:01+0000

    CZ-4B DEB & STARLINK-33989 Collision Probability (Pc) Trend

    CZ-4B DEB & STARLINK-33989 Collision Probability (Pc) TrendNot Available

    CZ-4B DEB & STARLINK-33989 Miss Distance (Miss Distance) Trend

    CZ-4B DEB & STARLINK-33989 Miss Distance (Miss Distance) TrendNot Available

    CZ-4B DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-33989Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4B DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-33989Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4B DEB

    No nearby objects data