Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.816422E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T19:02:54+0800
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    1 Object 1

    AOE ID 34117
    NORAD ID 34117
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 43576
    NORAD ID 43576
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB IRIDIUM 156
    Time of Closest Approach 2026-09-07T16:34:39+0000
    Collision Probability (Pc) 2.816422E-6
    Conjunction Distance (km) 2.008 km
    Relative Speed (km/s) 14.682 km/s
    Conjunction Risk Parameters R (Radial): -1.983 | I (In-track): -0.041 | C (Cross-track): 0.309
    Collision Risk Index (CRI) 0.44
    X Position (km) -6448.962 -6447.305
    Position Y (km) -2736.134 -2735.097
    Position Z (km) -1493.484 -1493.025
    Velocity X (km/s) -0.58 1.609
    Velocity Y (km/s) -2.519 0.162
    Velocity Z (km/s) 6.984 -7.284

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB IRIDIUM 156
    Semimajor Axis (a) 7133.609 km 7155.788 km
    Eccentricity (e) 0.005795 0.000224
    Inclination (i) 74.0379° 86.3986°
    RAAN 211.1071° 23.3707°
    Perigee Argument 225.0287° 89.7861°
    Mean Anomaly (M) 134.6164° 270.3591°
    Apogee 796.811 km 779.252 km
    Perigee 714.133 km 776.050 km
    Orbit Epoch 2026-09-05T04:39:00+0000 2026-09-04T22:22:57+0000

    COSMOS 2251 DEB & IRIDIUM 156 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & IRIDIUM 156 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & IRIDIUM 156 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & IRIDIUM 156 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 156Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 156Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data