Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    1.064908E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-01T09:04:05+0800
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    1 Object 1

    AOE ID 48865
    NORAD ID 48865
    Object Type PAYLOAD
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 53149
    NORAD ID 53149
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2550 STARLINK-4021
    Time of Closest Approach 2026-09-01T10:05:01+0000
    Collision Probability (Pc) 1.064908E-5
    Conjunction Distance (km) 1.267 km
    Relative Speed (km/s) 12.625 km/s
    Conjunction Risk Parameters R (Radial): 0.468 | I (In-track): 0.66 | C (Cross-track): 0.975
    Collision Risk Index (CRI) 0.56
    X Position (km) 2863.327 2862.459
    Position Y (km) 5363.135 5363.982
    Position Z (km) -3144.154 -3144.518
    Velocity X (km/s) -4.429 -3.327
    Velocity Y (km/s) -1.211 4.703
    Velocity Z (km/s) -6.096 5.003

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2550 STARLINK-4021
    Semimajor Axis (a) 6842.532 km 6840.884 km
    Eccentricity (e) 0.000837 0.000119
    Inclination (i) 67.1414° 53.1609°
    RAAN 231.9790° 91.3981°
    Perigee Argument 269.2903° 84.6746°
    Mean Anomaly (M) 90.7293° 275.4393°
    Apogee 470.119 km 463.563 km
    Perigee 458.671 km 461.931 km
    Orbit Epoch 2026-08-31T12:49:37+0000 2026-08-30T23:50:39+0000

    COSMOS 2550 & STARLINK-4021 Collision Probability (Pc) Trend

    COSMOS 2550 & STARLINK-4021 Collision Probability (Pc) TrendNot Available

    COSMOS 2550 & STARLINK-4021 Miss Distance (Miss Distance) Trend

    COSMOS 2550 & STARLINK-4021 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2550Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4021Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2550Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4021Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2550

    No nearby objects data