Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    7.096169E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:06:39+0800
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    1 Object 1

    AOE ID 9509
    NORAD ID 9509
    Object Type PAYLOAD
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 69850
    NORAD ID 69850
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter COSMOS 864 QIANFAN-221
    Time of Closest Approach 2026-09-18T04:53:15+0000
    Collision Probability (Pc) 7.096169E-7
    Conjunction Distance (km) 2.645 km
    Relative Speed (km/s) 3.493 km/s
    Conjunction Risk Parameters R (Radial): 1.313 | I (In-track): -2.231 | C (Cross-track): -0.54
    Collision Risk Index (CRI) 0.32
    X Position (km) 1115.469 1114.836
    Position Y (km) 1311.793 1309.95
    Position Z (km) -7143.743 -7145.531
    Velocity X (km/s) 1.003 4.203
    Velocity Y (km/s) 7.149 5.778
    Velocity Z (km/s) 1.457 1.739

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 864 QIANFAN-221
    Semimajor Axis (a) 7357.721 km 7338.694 km
    Eccentricity (e) 0.002859 0.003137
    Inclination (i) 82.9361° 89.0081°
    RAAN 82.5634° 54.0160°
    Perigee Argument 251.6467° 30.8294°
    Mean Anomaly (M) 132.7388° 329.4708°
    Apogee 1000.617 km 983.580 km
    Perigee 958.551 km 937.534 km
    Orbit Epoch 2026-09-15T12:47:46+0000 2026-09-15T11:10:27+0000

    COSMOS 864 & QIANFAN-221 Collision Probability (Pc) Trend

    COSMOS 864 & QIANFAN-221 Collision Probability (Pc) TrendNot Available

    COSMOS 864 & QIANFAN-221 Miss Distance (Miss Distance) Trend

    COSMOS 864 & QIANFAN-221 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 864Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-221Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 864Collision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-221Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 864

    No nearby objects data