Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.691532E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T06:14:10+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 53411
    NORAD ID 53411
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 120 STARLINK-4497
    Time of Closest Approach 2026-10-21T14:34:34+0000
    Collision Probability (Pc) 1.691532E-6
    Conjunction Distance (km) 1.936 km
    Relative Speed (km/s) 5.569 km/s
    Conjunction Risk Parameters R (Radial): -0.593 | I (In-track): 1.75 | C (Cross-track): 0.578
    Collision Risk Index (CRI) 0.4
    X Position (km) -445.016 -446.845
    Position Y (km) -4071.956 -4072.572
    Position Z (km) 5464.534 5464.667
    Velocity X (km/s) 6.371 7.592
    Velocity Y (km/s) 3.472 -0.859
    Velocity Z (km/s) 3.26 -0.02

    Orbital Parameters 国际轨道数据源

    Parameter USA 120 STARLINK-4497
    Semimajor Axis (a) 7462.324 km 6837.865 km
    Eccentricity (e) 0.085522 0.000113
    Inclination (i) 63.3173° 53.1599°
    RAAN 225.5491° 180.5203°
    Perigee Argument 51.7855° 88.8668°
    Mean Anomaly (M) 315.7079° 271.2465°
    Apogee 1722.377 km 460.504 km
    Perigee 445.997 km 458.952 km
    Orbit Epoch 2026-10-20T02:40:01+0000 2026-10-20T02:15:14+0000

    USA 120 & STARLINK-4497 Collision Probability (Pc) Trend

    USA 120 & STARLINK-4497 Collision Probability (Pc) TrendNot Available

    USA 120 & STARLINK-4497 Miss Distance (Miss Distance) Trend

    USA 120 & STARLINK-4497 Miss Distance (Miss Distance) TrendNot Available

    USA 120Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4497Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 120Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4497Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 120

    No nearby objects data