Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.671528E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-06T00:53:02+0800
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    1 Object 1

    AOE ID 33821
    NORAD ID 33821
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 54188
    NORAD ID 54188
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB STARLINK-5238
    Time of Closest Approach 2026-09-05T18:29:24+0000
    Collision Probability (Pc) 1.671528E-6
    Conjunction Distance (km) 1.871 km
    Relative Speed (km/s) 4.74 km/s
    Conjunction Risk Parameters R (Radial): -0.585 | I (In-track): -1.687 | C (Cross-track): -0.557
    Collision Risk Index (CRI) 0.39
    X Position (km) 2876.09 2876.688
    Position Y (km) -3789.953 -3788.806
    Position Z (km) 4901.159 4902.51
    Velocity X (km/s) -0.636 3.554
    Velocity Y (km/s) 5.825 6.201
    Velocity Z (km/s) 4.883 2.701

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB STARLINK-5238
    Semimajor Axis (a) 6813.631 km 6837.862 km
    Eccentricity (e) 0.003532 0.000083
    Inclination (i) 74.0225° 53.1597°
    RAAN 290.7498° 258.8049°
    Perigee Argument 256.8333° 70.8617°
    Mean Anomaly (M) 102.8935° 289.2475°
    Apogee 459.560 km 460.293 km
    Perigee 411.428 km 459.157 km
    Orbit Epoch 2026-09-05T10:30:12+0000 2026-09-05T07:16:41+0000

    COSMOS 2251 DEB & STARLINK-5238 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & STARLINK-5238 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & STARLINK-5238 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & STARLINK-5238 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5238Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5238Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data