Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.540606E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T12:52:30+0800
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    1 Object 1

    Name USA 120
    AOE ID 23907
    NORAD ID 23907
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 57867
    NORAD ID 57867
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 120 STARLINK-30439
    Time of Closest Approach 2026-10-21T00:11:07+0000
    Collision Probability (Pc) 2.540606E-6
    Conjunction Distance (km) 1.963 km
    Relative Speed (km/s) 11.371 km/s
    Conjunction Risk Parameters R (Radial): 1.758 | I (In-track): -0.552 | C (Cross-track): 0.678
    Collision Risk Index (CRI) 0.43
    X Position (km) -3175.263 -3176.846
    Position Y (km) -5176.582 -5177.51
    Position Z (km) 3181.422 3182.12
    Velocity X (km/s) 5.188 4.321
    Velocity Y (km/s) 0.774 -4.999
    Velocity Z (km/s) 5.947 -3.81

    Orbital Parameters 国际轨道数据源

    Parameter USA 120 STARLINK-30439
    Semimajor Axis (a) 7462.335 km 6861.155 km
    Eccentricity (e) 0.085518 0.000182
    Inclination (i) 63.3172° 42.9993°
    RAAN 227.4945° 99.8335°
    Perigee Argument 51.7744° 258.6177°
    Mean Anomaly (M) 315.7176° 101.4470°
    Apogee 1722.365 km 484.269 km
    Perigee 446.031 km 481.767 km
    Orbit Epoch 2026-10-19T08:50:47+0000 2026-10-19T17:46:22+0000

    USA 120 & STARLINK-30439 Collision Probability (Pc) Trend

    USA 120 & STARLINK-30439 Collision Probability (Pc) TrendNot Available

    USA 120 & STARLINK-30439 Miss Distance (Miss Distance) Trend

    USA 120 & STARLINK-30439 Miss Distance (Miss Distance) TrendNot Available

    USA 120Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-30439Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 120Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-30439Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 120

    No nearby objects data