Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.523546E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-18T02:00:31+0800
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    1 Object 1

    AOE ID 21550
    NORAD ID 21550
    Object Type DEBRIS
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 60390
    NORAD ID 60390
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter DELTA 1 DEB QIANFAN-12
    Time of Closest Approach 2026-10-20T01:16:02+0000
    Collision Probability (Pc) 1.523546E-6
    Conjunction Distance (km) 2.482 km
    Relative Speed (km/s) 11.392 km/s
    Conjunction Risk Parameters R (Radial): 0.837 | I (In-track): -1.468 | C (Cross-track): -1.816
    Collision Risk Index (CRI) 0.39
    X Position (km) 201.71 199.889
    Position Y (km) 1257.541 1256.277
    Position Z (km) 7324.277 7325.393
    Velocity X (km/s) 7.31 0.365
    Velocity Y (km/s) -1.736 7.208
    Velocity Z (km/s) 0.009 -1.234

    Orbital Parameters 国际轨道数据源

    Parameter DELTA 1 DEB QIANFAN-12
    Semimajor Axis (a) 7859.147 km 7446.629 km
    Eccentricity (e) 0.054341 0.001465
    Inclination (i) 99.8326° 88.9665°
    RAAN 164.2601° 267.1907°
    Perigee Argument 108.0823° 40.3677°
    Mean Anomaly (M) 43.1477° 319.8558°
    Apogee 1908.085 km 1079.400 km
    Perigee 1053.935 km 1057.584 km
    Orbit Epoch 2026-10-17T04:13:18+0000 2026-10-17T12:20:32+0000

    DELTA 1 DEB & QIANFAN-12 Collision Probability (Pc) Trend

    DELTA 1 DEB & QIANFAN-12 Collision Probability (Pc) TrendNot Available

    DELTA 1 DEB & QIANFAN-12 Miss Distance (Miss Distance) Trend

    DELTA 1 DEB & QIANFAN-12 Miss Distance (Miss Distance) TrendNot Available

    DELTA 1 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-12Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DELTA 1 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-12Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DELTA 1 DEB

    No nearby objects data