Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.054446E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T13:24:33+0800
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    1 Object 1

    AOE ID 26121
    NORAD ID 26121
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 55386
    NORAD ID 55386
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4 DEB STARLINK-5555
    Time of Closest Approach 2026-09-05T18:04:14+0000
    Collision Probability (Pc) 2.054446E-6
    Conjunction Distance (km) 1.929 km
    Relative Speed (km/s) 7.536 km/s
    Conjunction Risk Parameters R (Radial): -0.014 | I (In-track): 1.679 | C (Cross-track): 0.949
    Collision Risk Index (CRI) 0.41
    X Position (km) -6531.865 -6532.384
    Position Y (km) -169.138 -169.823
    Position Z (km) 2086.397 2084.67
    Velocity X (km/s) -2.311 -1.339
    Velocity Y (km/s) 1.146 -5.89
    Velocity Z (km/s) -7.171 -4.656

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB STARLINK-5555
    Semimajor Axis (a) 6849.832 km 6861.242 km
    Eccentricity (e) 0.002812 0.000149
    Inclination (i) 98.6734° 43.0014°
    RAAN 355.8296° 32.7482°
    Perigee Argument 288.0615° 270.1474°
    Mean Anomaly (M) 71.7559° 89.9207°
    Apogee 490.960 km 484.127 km
    Perigee 452.430 km 482.083 km
    Orbit Epoch 2026-09-03T07:20:27+0000 2026-09-03T18:19:25+0000

    CZ-4 DEB & STARLINK-5555 Collision Probability (Pc) Trend

    CZ-4 DEB & STARLINK-5555 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & STARLINK-5555 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & STARLINK-5555 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5555Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5555Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data