Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    6.554812E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T06:31:13+0800
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    1 Object 1

    AOE ID 35320
    NORAD ID 35320
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    Name BB4
    AOE ID 57757
    NORAD ID 57757
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4 DEB BB4
    Time of Closest Approach 2026-09-13T01:03:29+0000
    Collision Probability (Pc) 6.554812E-7
    Conjunction Distance (km) 2.8 km
    Relative Speed (km/s) 3.463 km/s
    Conjunction Risk Parameters R (Radial): 2.431 | I (In-track): 1.352 | C (Cross-track): -0.317
    Collision Risk Index (CRI) 0.31
    X Position (km) 376.236 376.293
    Position Y (km) -4563.729 -4564.27
    Position Z (km) 5282.536 5285.282
    Velocity X (km/s) -2.111 1.342
    Velocity Y (km/s) 5.417 5.68
    Velocity Z (km/s) 4.819 4.794

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB BB4
    Semimajor Axis (a) 6996.032 km 7004.157 km
    Eccentricity (e) 0.000077 0.000967
    Inclination (i) 98.2714° 81.0023°
    RAAN 281.5707° 269.2618°
    Perigee Argument 63.2270° 87.6777°
    Mean Anomaly (M) 296.9022° 272.5539°
    Apogee 618.438 km 632.794 km
    Perigee 617.352 km 619.246 km
    Orbit Epoch 2026-09-10T08:05:22+0000 2026-09-08T12:11:53+0000

    CZ-4 DEB & BB4 Collision Probability (Pc) Trend

    CZ-4 DEB & BB4 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & BB4 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & BB4 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    BB4Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    BB4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data