Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    8.128286E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T11:55:46+0800
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    1 Object 1

    Name USA 55
    AOE ID 20547
    NORAD ID 20547
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 68318
    NORAD ID 68318
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 55 STARLINK-37113
    Time of Closest Approach 2026-09-06T09:50:55+0000
    Collision Probability (Pc) 8.128286E-6
    Conjunction Distance (km) 1.423 km
    Relative Speed (km/s) 15.142 km/s
    Conjunction Risk Parameters R (Radial): 0.541 | I (In-track): 0.139 | C (Cross-track): 1.309
    Collision Risk Index (CRI) 0.53
    X Position (km) -6016.765 -6017.512
    Position Y (km) -1203.16 -1201.968
    Position Z (km) -3043.207 -3043.417
    Velocity X (km/s) -3.434 3.074
    Velocity Y (km/s) -0.068 1.714
    Velocity Z (km/s) 6.789 -6.766

    Orbital Parameters 国际轨道数据源

    Parameter USA 55 STARLINK-37113
    Semimajor Axis (a) 6809.881 km 6843.680 km
    Eccentricity (e) 0.005379 0.000096
    Inclination (i) 94.0952° 97.2856°
    RAAN 187.8110° 11.8736°
    Perigee Argument 187.8301° 97.1588°
    Mean Anomaly (M) 172.2121° 262.9764°
    Apogee 468.378 km 466.200 km
    Perigee 395.110 km 464.886 km
    Orbit Epoch 2026-09-03T19:46:48+0000 2026-09-03T07:20:41+0000

    USA 55 & STARLINK-37113 Collision Probability (Pc) Trend

    USA 55 & STARLINK-37113 Collision Probability (Pc) TrendNot Available

    USA 55 & STARLINK-37113 Miss Distance (Miss Distance) Trend

    USA 55 & STARLINK-37113 Miss Distance (Miss Distance) TrendNot Available

    USA 55Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-37113Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 55Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-37113Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 55

    No nearby objects data