Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.946073E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T21:15:24+0800
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    1 Object 1

    AOE ID 22236
    NORAD ID 22236
    Object Type PAYLOAD
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 55926
    NORAD ID 55926
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2221 STARLINK-5921
    Time of Closest Approach 2026-09-13T04:15:54+0000
    Collision Probability (Pc) 1.946073E-6
    Conjunction Distance (km) 2.048 km
    Relative Speed (km/s) 8.781 km/s
    Conjunction Risk Parameters R (Radial): -1.188 | I (In-track): -1.361 | C (Cross-track): -0.963
    Collision Risk Index (CRI) 0.41
    X Position (km) 484.017 482.882
    Position Y (km) 2333.238 2334.735
    Position Z (km) -6532.504 -6533.318
    Velocity X (km/s) -1.488 -7.477
    Velocity Y (km/s) 7.021 1.125
    Velocity Z (km/s) 2.397 -0.151

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2221 STARLINK-5921
    Semimajor Axis (a) 6955.123 km 6950.218 km
    Eccentricity (e) 0.001277 0.000307
    Inclination (i) 82.5006° 69.9997°
    RAAN 100.5271° 174.3357°
    Perigee Argument 288.1892° 269.2113°
    Mean Anomaly (M) 71.7940° 90.8694°
    Apogee 585.872 km 574.217 km
    Perigee 568.100 km 569.945 km
    Orbit Epoch 2026-09-12T01:18:24+0000 2026-09-12T04:38:16+0000

    COSMOS 2221 & STARLINK-5921 Collision Probability (Pc) Trend

    COSMOS 2221 & STARLINK-5921 Collision Probability (Pc) TrendNot Available

    COSMOS 2221 & STARLINK-5921 Miss Distance (Miss Distance) Trend

    COSMOS 2221 & STARLINK-5921 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2221Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5921Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2221Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5921Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2221

    No nearby objects data