Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.387701E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-10T23:29:01+0800
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    1 Object 1

    AOE ID 21506
    NORAD ID 21506
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 63174
    NORAD ID 63174
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter DELTA 1 DEB QIANFAN-88
    Time of Closest Approach 2026-09-13T05:12:29+0000
    Collision Probability (Pc) 4.387701E-6
    Conjunction Distance (km) 1.709 km
    Relative Speed (km/s) 14.539 km/s
    Conjunction Risk Parameters R (Radial): 0.922 | I (In-track): 0.196 | C (Cross-track): -1.426
    Collision Risk Index (CRI) 0.48
    X Position (km) -1713.985 -1715.156
    Position Y (km) 4089.192 4088.316
    Position Z (km) -6005.354 -6004.471
    Velocity X (km/s) -0.308 2.064
    Velocity Y (km/s) 6.066 -5.494
    Velocity Z (km/s) 4.157 -4.335

    Orbital Parameters 国际轨道数据源

    Parameter DELTA 1 DEB QIANFAN-88
    Semimajor Axis (a) 7580.328 km 7446.614 km
    Eccentricity (e) 0.017542 0.001407
    Inclination (i) 99.5727° 88.9660°
    RAAN 96.0542° 291.6644°
    Perigee Argument 290.9717° 74.6999°
    Mean Anomaly (M) 194.0233° 285.5706°
    Apogee 1335.166 km 1078.956 km
    Perigee 1069.216 km 1057.998 km
    Orbit Epoch 2026-09-09T09:01:41+0000 2026-09-10T06:44:07+0000

    DELTA 1 DEB & QIANFAN-88 Collision Probability (Pc) Trend

    DELTA 1 DEB & QIANFAN-88 Collision Probability (Pc) TrendNot Available

    DELTA 1 DEB & QIANFAN-88 Miss Distance (Miss Distance) Trend

    DELTA 1 DEB & QIANFAN-88 Miss Distance (Miss Distance) TrendNot Available

    DELTA 1 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-88Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DELTA 1 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-88Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DELTA 1 DEB

    No nearby objects data