Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.299216E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T20:55:49+0800
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    1 Object 1

    AOE ID 35332
    NORAD ID 35332
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 61554
    NORAD ID 61554
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter CZ-4 DEB QIANFAN-21
    Time of Closest Approach 2026-10-21T13:13:53+0000
    Collision Probability (Pc) 9.299216E-7
    Conjunction Distance (km) 2.802 km
    Relative Speed (km/s) 6.68 km/s
    Conjunction Risk Parameters R (Radial): 2.8 | I (In-track): 0.07 | C (Cross-track): 0.082
    Collision Risk Index (CRI) 0.34
    X Position (km) -974.386 -974.689
    Position Y (km) -993.599 -993.912
    Position Z (km) -7071.384 -7074.152
    Velocity X (km/s) -0.567 5.564
    Velocity Y (km/s) 7.321 4.699
    Velocity Z (km/s) -1.04 -1.426

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB QIANFAN-21
    Semimajor Axis (a) 7178.667 km 7193.491 km
    Eccentricity (e) 0.012159 0.001248
    Inclination (i) 98.2749° 88.9823°
    RAAN 91.9378° 40.4072°
    Perigee Argument 161.9857° 70.9769°
    Mean Anomaly (M) 198.5691° 289.2773°
    Apogee 887.813 km 824.329 km
    Perigee 713.247 km 806.379 km
    Orbit Epoch 2026-10-20T04:02:54+0000 2026-10-21T06:57:21+0000

    CZ-4 DEB & QIANFAN-21 Collision Probability (Pc) Trend

    CZ-4 DEB & QIANFAN-21 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & QIANFAN-21 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & QIANFAN-21 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-21Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-21Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data