Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.096146E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T21:03:46+0800
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    1 Object 1

    Name USA 77
    AOE ID 21809
    NORAD ID 21809
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 61637
    NORAD ID 61637
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 77 STARLINK-32419
    Time of Closest Approach 2026-09-13T05:37:09+0000
    Collision Probability (Pc) 1.096146E-6
    Conjunction Distance (km) 2.963 km
    Relative Speed (km/s) 10.136 km/s
    Conjunction Risk Parameters R (Radial): -0.131 | I (In-track): 2.202 | C (Cross-track): -1.977
    Collision Risk Index (CRI) 0.36
    X Position (km) 3103.597 3105.672
    Position Y (km) -4591.311 -4589.261
    Position Z (km) 4036.369 4036.882
    Velocity X (km/s) 1.298 6.79
    Velocity Y (km/s) 5.924 2.284
    Velocity Z (km/s) 5.081 -2.621

    Orbital Parameters 国际轨道数据源

    Parameter USA 77 STARLINK-32419
    Semimajor Axis (a) 7424.542 km 6861.204 km
    Eccentricity (e) 0.089908 0.000064
    Inclination (i) 63.2947° 43.0004°
    RAAN 288.2815° 186.7154°
    Perigee Argument 76.3271° 262.4723°
    Mean Anomaly (M) 293.6137° 97.6056°
    Apogee 1713.928 km 483.510 km
    Perigee 378.882 km 482.624 km
    Orbit Epoch 2026-09-11T02:09:02+0000 2026-09-11T06:01:02+0000

    USA 77 & STARLINK-32419 Collision Probability (Pc) Trend

    USA 77 & STARLINK-32419 Collision Probability (Pc) TrendNot Available

    USA 77 & STARLINK-32419 Miss Distance (Miss Distance) Trend

    USA 77 & STARLINK-32419 Miss Distance (Miss Distance) TrendNot Available

    USA 77Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-32419Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 77Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-32419Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 77

    No nearby objects data