Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    6.166456E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T06:19:04+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 30388
    NORAD ID 30388
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter COSMOS 1821 FENGYUN 1C DEB
    Time of Closest Approach 2026-09-18T02:39:07+0000
    Collision Probability (Pc) 6.166456E-6
    Conjunction Distance (km) 1.536 km
    Relative Speed (km/s) 14.669 km/s
    Conjunction Risk Parameters R (Radial): 1.507 | I (In-track): -0.013 | C (Cross-track): 0.298
    Collision Risk Index (CRI) 0.51
    X Position (km) -1143.413 -1142.886
    Position Y (km) 7258.929 7257.487
    Position Z (km) 2.208 2.239
    Velocity X (km/s) -0.894 1.084
    Velocity Y (km/s) -0.172 0.109
    Velocity Z (km/s) 7.319 -7.213

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 1821 FENGYUN 1C DEB
    Semimajor Axis (a) 7363.536 km 7202.159 km
    Eccentricity (e) 0.003794 0.021919
    Inclination (i) 82.9089° 98.5831°
    RAAN 101.1971° 276.4104°
    Perigee Argument 58.6170° 341.9302°
    Mean Anomaly (M) 104.4412° 175.8953°
    Apogee 1013.337 km 981.885 km
    Perigee 957.461 km 666.159 km
    Orbit Epoch 2026-09-15T02:02:07+0000 2026-09-15T11:59:24+0000

    COSMOS 1821 & FENGYUN 1C DEB Collision Probability (Pc) Trend

    COSMOS 1821 & FENGYUN 1C DEB Collision Probability (Pc) TrendNot Available

    COSMOS 1821 & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    COSMOS 1821 & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    COSMOS 1821Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 1821Collision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 1821

    No nearby objects data