Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.965217E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-13T12:44:45+0800
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    1 Object 1

    AOE ID 5549
    NORAD ID 5549
    Object Type PAYLOAD
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 45127
    NORAD ID 45127
    Object Type DEBRIS
    Country
    CIS CIS

    Conjunction Constraints

    Parameter COSMOS 446 COSMOS 2491 DEB
    Time of Closest Approach 2026-09-14T08:07:41+0000
    Collision Probability (Pc) 1.965217E-6
    Conjunction Distance (km) 1.98 km
    Relative Speed (km/s) 7.796 km/s
    Conjunction Risk Parameters R (Radial): 1.122 | I (In-track): -1.362 | C (Cross-track): 0.897
    Collision Risk Index (CRI) 0.41
    X Position (km) 105.105 103.731
    Position Y (km) -2147.917 -2149.052
    Position Z (km) -7487.05 -7487.91
    Velocity X (km/s) 7.16 3.105
    Velocity Y (km/s) -0.173 6.212
    Velocity Z (km/s) 0.199 -1.69

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 446 COSMOS 2491 DEB
    Semimajor Axis (a) 7824.024 km 7789.943 km
    Eccentricity (e) 0.008401 0.006839
    Inclination (i) 74.0325° 82.4522°
    RAAN 0.3783° 67.9470°
    Perigee Argument 325.3169° 348.6273°
    Mean Anomaly (M) 34.2423° 11.3269°
    Apogee 1511.617 km 1465.082 km
    Perigee 1380.157 km 1358.530 km
    Orbit Epoch 2026-09-12T16:24:12+0000 2026-09-10T05:47:24+0000

    COSMOS 446 & COSMOS 2491 DEB Collision Probability (Pc) Trend

    COSMOS 446 & COSMOS 2491 DEB Collision Probability (Pc) TrendNot Available

    COSMOS 446 & COSMOS 2491 DEB Miss Distance (Miss Distance) Trend

    COSMOS 446 & COSMOS 2491 DEB Miss Distance (Miss Distance) TrendNot Available

    COSMOS 446Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    COSMOS 2491 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 446Collision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 2491 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 446

    No nearby objects data