Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.230351E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T07:39:29+0800
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    1 Object 1

    AOE ID 54828
    NORAD ID 54828
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 66748
    NORAD ID 66748
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-5381 UMBRA-11
    Time of Closest Approach 2026-09-03T19:20:55+0000
    Collision Probability (Pc) 3.230351E-6
    Conjunction Distance (km) 1.834 km
    Relative Speed (km/s) 12.44 km/s
    Conjunction Risk Parameters R (Radial): 0.146 | I (In-track): -1.063 | C (Cross-track): -1.486
    Collision Risk Index (CRI) 0.45
    X Position (km) -3555.869 -3556.096
    Position Y (km) 3642.479 3640.882
    Position Z (km) -4604.137 -4605.007
    Velocity X (km/s) -5.964 4.461
    Velocity Y (km/s) -4.648 -2.671
    Velocity Z (km/s) 0.93 -5.563

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-5381 UMBRA-11
    Semimajor Axis (a) 6861.200 km 6855.159 km
    Eccentricity (e) 0.000134 0.000311
    Inclination (i) 43.0032° 97.4134°
    RAAN 223.9474° 319.4852°
    Perigee Argument 282.5893° 79.2108°
    Mean Anomaly (M) 77.4808° 280.9482°
    Apogee 483.984 km 479.152 km
    Perigee 482.142 km 474.892 km
    Orbit Epoch 2026-09-01T09:38:00+0000 2026-09-02T04:41:55+0000

    STARLINK-5381 & UMBRA-11 Collision Probability (Pc) Trend

    STARLINK-5381 & UMBRA-11 Collision Probability (Pc) TrendNot Available

    STARLINK-5381 & UMBRA-11 Miss Distance (Miss Distance) Trend

    STARLINK-5381 & UMBRA-11 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-5381Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    UMBRA-11Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-5381Collision Probability Trend

    Object 1 Probability TrendNot Available

    UMBRA-11Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-5381

    No nearby objects data