Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.441829E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-13T13:58:37+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 68388
    NORAD ID 68388
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 55 STARLINK-37203
    Time of Closest Approach 2026-09-15T14:25:27+0000
    Collision Probability (Pc) 1.441829E-6
    Conjunction Distance (km) 2.83 km
    Relative Speed (km/s) 14.782 km/s
    Conjunction Risk Parameters R (Radial): 1.366 | I (In-track): 0.577 | C (Cross-track): 2.411
    Collision Risk Index (CRI) 0.38
    X Position (km) -2622.845 -2624.481
    Position Y (km) -1137.446 -1135.459
    Position Z (km) -6225.001 -6226.177
    Velocity X (km/s) -6.768 5.132
    Velocity Y (km/s) -1.516 4.744
    Velocity Z (km/s) 3.107 -3.03

    Orbital Parameters 国际轨道数据源

    Parameter USA 55 STARLINK-37203
    Semimajor Axis (a) 6809.675 km 6843.677 km
    Eccentricity (e) 0.005535 0.000139
    Inclination (i) 94.0969° 97.2865°
    RAAN 192.8620° 36.9542°
    Perigee Argument 153.6185° 107.9599°
    Mean Anomaly (M) 206.7909° 252.1796°
    Apogee 469.233 km 466.494 km
    Perigee 393.843 km 464.586 km
    Orbit Epoch 2026-09-12T18:18:43+0000 2026-09-12T22:42:39+0000

    USA 55 & STARLINK-37203 Collision Probability (Pc) Trend

    USA 55 & STARLINK-37203 Collision Probability (Pc) TrendNot Available

    USA 55 & STARLINK-37203 Miss Distance (Miss Distance) Trend

    USA 55 & STARLINK-37203 Miss Distance (Miss Distance) TrendNot Available

    USA 55Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-37203Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 55Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-37203Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 55

    No nearby objects data