Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.736188E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T08:35:53+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 52289
    NORAD ID 52289
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 55 STARLINK-3751
    Time of Closest Approach 2026-09-03T01:09:38+0000
    Collision Probability (Pc) 2.736188E-5
    Conjunction Distance (km) 0.995 km
    Relative Speed (km/s) 14.611 km/s
    Conjunction Risk Parameters R (Radial): 0.151 | I (In-track): 0.29 | C (Cross-track): -0.939
    Collision Risk Index (CRI) 0.64
    X Position (km) -6729.765 -6729.754
    Position Y (km) -799.558 -800.48
    Position Z (km) 985.817 986.191
    Velocity X (km/s) 1.028 -0.33
    Velocity Y (km/s) 0.675 -4.694
    Velocity Z (km/s) 7.511 -6.009

    Orbital Parameters 国际轨道数据源

    Parameter USA 55 STARLINK-3751
    Semimajor Axis (a) 6809.906 km 6848.914 km
    Eccentricity (e) 0.005359 0.000080
    Inclination (i) 94.0951° 53.1615°
    RAAN 187.1157° 18.6584°
    Perigee Argument 192.5967° 85.3945°
    Mean Anomaly (M) 167.3954° 274.7147°
    Apogee 468.264 km 471.325 km
    Perigee 395.274 km 470.229 km
    Orbit Epoch 2026-09-02T14:14:32+0000 2026-09-01T20:14:07+0000

    USA 55 & STARLINK-3751 Collision Probability (Pc) Trend

    USA 55 & STARLINK-3751 Collision Probability (Pc) TrendNot Available

    USA 55 & STARLINK-3751 Miss Distance (Miss Distance) Trend

    USA 55 & STARLINK-3751 Miss Distance (Miss Distance) TrendNot Available

    USA 55Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-3751Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 55Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-3751Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 55

    No nearby objects data