Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.634675E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-06T11:13:31+0800
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    1 Object 1

    Name USA 15
    AOE ID 16591
    NORAD ID 16591
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 60511
    NORAD ID 60511
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 15 FLOCK 4BE 2
    Time of Closest Approach 2026-09-06T03:44:55+0000
    Collision Probability (Pc) 1.634675E-6
    Conjunction Distance (km) 2.045 km
    Relative Speed (km/s) 6.553 km/s
    Conjunction Risk Parameters R (Radial): 1.916 | I (In-track): -0.652 | C (Cross-track): 0.288
    Collision Risk Index (CRI) 0.39
    X Position (km) -4670.558 -4671.369
    Position Y (km) 1102.623 1103.01
    Position Z (km) 4749.077 4750.913
    Velocity X (km/s) -5.437 -4.86
    Velocity Y (km/s) -3.862 2.574
    Velocity Z (km/s) -4.28 -5.363

    Orbital Parameters 国际轨道数据源

    Parameter USA 15 FLOCK 4BE 2
    Semimajor Axis (a) 7213.645 km 6756.042 km
    Eccentricity (e) 0.064937 0.000224
    Inclination (i) 63.3063° 97.3777°
    RAAN 17.6814° 338.3851°
    Perigee Argument 114.4933° 312.9412°
    Mean Anomaly (M) 252.5247° 47.1658°
    Apogee 1303.940 km 379.421 km
    Perigee 367.076 km 376.389 km
    Orbit Epoch 2026-09-05T18:43:08+0000 2026-09-05T05:40:08+0000

    USA 15 & FLOCK 4BE 2 Collision Probability (Pc) Trend

    USA 15 & FLOCK 4BE 2 Collision Probability (Pc) TrendNot Available

    USA 15 & FLOCK 4BE 2 Miss Distance (Miss Distance) Trend

    USA 15 & FLOCK 4BE 2 Miss Distance (Miss Distance) TrendNot Available

    USA 15Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FLOCK 4BE 2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 15Collision Probability Trend

    Object 1 Probability TrendNot Available

    FLOCK 4BE 2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 15

    No nearby objects data