Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.05493E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-15T05:13:41+0800
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    1 Object 1

    AOE ID 17369
    NORAD ID 17369
    Object Type PAYLOAD
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 42811
    NORAD ID 42811
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 1818 IRIDIUM 128
    Time of Closest Approach 2026-09-15T01:36:59+0000
    Collision Probability (Pc) 1.05493E-6
    Conjunction Distance (km) 2.023 km
    Relative Speed (km/s) 2.937 km/s
    Conjunction Risk Parameters R (Radial): 1.529 | I (In-track): 1.296 | C (Cross-track): 0.27
    Collision Risk Index (CRI) 0.35
    X Position (km) 6586.656 6588.543
    Position Y (km) -1598.113 -1598.224
    Position Z (km) -2307.857 -2307.138
    Velocity X (km/s) 2.885 2.441
    Velocity Y (km/s) 2.727 -0.083
    Velocity Z (km/s) 6.323 7.049

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 1818 IRIDIUM 128
    Semimajor Axis (a) 7163.587 km 7155.808 km
    Eccentricity (e) 0.001994 0.000201
    Inclination (i) 65.0134° 86.4022°
    RAAN 356.8564° 347.9395°
    Perigee Argument 282.2089° 93.5372°
    Mean Anomaly (M) 77.6763° 266.6054°
    Apogee 799.733 km 779.113 km
    Perigee 771.167 km 776.229 km
    Orbit Epoch 2026-09-14T13:58:47+0000 2026-09-14T05:36:39+0000

    COSMOS 1818 & IRIDIUM 128 Collision Probability (Pc) Trend

    COSMOS 1818 & IRIDIUM 128 Collision Probability (Pc) TrendNot Available

    COSMOS 1818 & IRIDIUM 128 Miss Distance (Miss Distance) Trend

    COSMOS 1818 & IRIDIUM 128 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 1818Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 128Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 1818Collision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 128Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 1818

    No nearby objects data