Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.484043E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-15T21:30:43+0800
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    1 Object 1

    AOE ID 17525
    NORAD ID 17525
    Object Type PAYLOAD
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 81279
    NORAD ID 81279
    Object Type UNKNOWN
    Country

    Conjunction Constraints

    Parameter COSMOS 1821 TBA - TO BE ASSIGNED
    Time of Closest Approach 2026-09-17T21:51:41+0000
    Collision Probability (Pc) 2.484043E-6
    Conjunction Distance (km) 2.102 km
    Relative Speed (km/s) 14.377 km/s
    Conjunction Risk Parameters R (Radial): -0.929 | I (In-track): -0.391 | C (Cross-track): 1.844
    Collision Risk Index (CRI) 0.43
    X Position (km) -810.487 -808.644
    Position Y (km) -654.948 -654.191
    Position Z (km) 7261.324 7260.658
    Velocity X (km/s) 1.225 -3.94
    Velocity Y (km/s) -7.26 6.14
    Velocity Z (km/s) -0.498 0.16

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 1821 TBA - TO BE ASSIGNED
    Semimajor Axis (a) 7363.536 km 7201.681 km
    Eccentricity (e) 0.003794 0.020472
    Inclination (i) 82.9089° 98.0962°
    RAAN 101.1971° 299.2612°
    Perigee Argument 58.6170° 296.6851°
    Mean Anomaly (M) 104.4412° 61.3497°
    Apogee 1013.337 km 970.978 km
    Perigee 957.461 km 676.110 km
    Orbit Epoch 2026-09-15T02:02:07+0000 2026-09-14T08:54:49+0000

    COSMOS 1821 & TBA - TO BE ASSIGNED Collision Probability (Pc) Trend

    COSMOS 1821 & TBA - TO BE ASSIGNED Collision Probability (Pc) TrendNot Available

    COSMOS 1821 & TBA - TO BE ASSIGNED Miss Distance (Miss Distance) Trend

    COSMOS 1821 & TBA - TO BE ASSIGNED Miss Distance (Miss Distance) TrendNot Available

    COSMOS 1821Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TBA - TO BE ASSIGNEDMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 1821Collision Probability Trend

    Object 1 Probability TrendNot Available

    TBA - TO BE ASSIGNEDCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 1821

    No nearby objects data