Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    7.054722E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T05:35:07+0800
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    1 Object 1

    AOE ID 20849
    NORAD ID 20849
    Object Type DEBRIS
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 69817
    NORAD ID 69817
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter CZ-4 DEB QIANFAN-218
    Time of Closest Approach 2026-09-04T21:55:22+0000
    Collision Probability (Pc) 7.054722E-5
    Conjunction Distance (km) 0.729 km
    Relative Speed (km/s) 13.276 km/s
    Conjunction Risk Parameters R (Radial): -0.678 | I (In-track): 0.128 | C (Cross-track): -0.232
    Collision Risk Index (CRI) 0.72
    X Position (km) 1232.186 1232.15
    Position Y (km) -274.079 -274.304
    Position Z (km) -7080.275 -7079.583
    Velocity X (km/s) -5.03 7.268
    Velocity Y (km/s) -5.448 -0.859
    Velocity Z (km/s) -0.681 1.304

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB QIANFAN-218
    Semimajor Axis (a) 7206.387 km 7180.423 km
    Eccentricity (e) 0.003752 0.000851
    Inclination (i) 98.6852° 88.9979°
    RAAN 225.9472° 353.1213°
    Perigee Argument 229.9307° 44.5277°
    Mean Anomaly (M) 129.8577° 315.6599°
    Apogee 855.291 km 808.394 km
    Perigee 801.209 km 796.178 km
    Orbit Epoch 2026-09-04T08:50:02+0000 2026-09-04T13:52:54+0000

    CZ-4 DEB & QIANFAN-218 Collision Probability (Pc) Trend

    CZ-4 DEB & QIANFAN-218 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & QIANFAN-218 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & QIANFAN-218 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-218Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-218Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data